cÁc chuyÊn ĐỀ toÁn khÓ lỚ -...
TRANSCRIPT
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Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
04.6680.7124 : 0983.398.619 0978.288.562 in thoi: - Hotline
tanmaistudy.weebly.com - [email protected] Website: Email:
CC CHUYN TON KH LP 2 THY HONG 0978.288.562 Trang 1
CC CHUYN
TON KH LP 2 TN LP:
HC SINH:
TRNG:
LCH HC:
Trung tm Bi dng vn ha Thnh Cng Tn Mai
Hc thnh cng!
-
Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
04.6680.7124 : 0983.398.619 0978.288.562 in thoi: - Hotline
tanmaistudy.weebly.com - [email protected] Website: Email:
CC CHUYN TON KH LP 2 THY HONG 0978.288.562 Trang 2
CC CHUYN TON KH KHI LP 2
(Lu : Cc bi tp nh du * l cc bi tp v nh)
I. CHUYN : PHN TCH S
* Bi 1: C bao nhiu s c mt ch s? Hy khoanh vo ch ci t trc kt
qu ng?
a. 10
b. 9
c. 100
d. 11
* Bi 2: S ln nht c hai ch s m tng cc ch s ca n bng 12 l
s:..
Bi 3: S b nht c hai ch s m hiu hai ch s ca n bng 3 l s:
Bi 4: S ln nht c hai ch s m tng cc ch s ca n bng 11 l s:.
* Bi 5: C tt c . s c hai ch s m tng hai ch s ca mi s bng
7..
Bi 6: C tt c s c hai ch s m hiu hai ch s ca mi s bng 5.
* Bi 7: S ln nht c hai ch s khc nhau l s:..
Bi 8: S b nht c hai ch s m tng cc ch s ca n bng 14 l s:...
Bi 9: Hai s c tng bng s chn ln nht c hai ch s, bit s b l 29. S
ln l:
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Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
04.6680.7124 : 0983.398.619 0978.288.562 in thoi: - Hotline
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CC CHUYN TON KH LP 2 THY HONG 0978.288.562 Trang 3
Bi 10: Tm s c hai ch s bit hiu ca ch s hng chc v ch s hng
n v bng 5 v tch ca hai ch s bng 24.
............................................................................................................................
............................................................................................................................
............................................................................................................................
............................................................................................................................
* Bi 11: C tt c.s c hai ch s m tng hai ch s bng 13.
Bi 12:
a) Vit tt c cc ch s c hai ch s m tng hai ch s ca s bng s
nh nht c hai ch s.
...........................................................................................................................
b) Tnh tng cc s lp c trn
...........................................................................................................................
...........................................................................................................................
Bi 13: Lp s c 3 ch s khc nhau t ba ch s 5, 2, 7. S no ln nht, s
no b nht t cc s lp.
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
* Bi 14: Cho cc ch s: 0,1,2,3.
a, Lp cc s c hai ch s khc nhau t cc ch s trn.
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Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
04.6680.7124 : 0983.398.619 0978.288.562 in thoi: - Hotline
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CC CHUYN TON KH LP 2 THY HONG 0978.288.562 Trang 4
b, Tnh tng cc s ln nht c hng chc l 1, 2, 3; va vit c
Bi 16: Cho cc ch s: 0, 2, 3, 5.
a) Vit cc s chn c hai ch s khc nhau t cc ch s trn.
b) Vit cc s l c hai ch s t cc ch s trn.
* Bi 17:
a) Vit cc s t 31 n 40 theo th t gim dn:
b) Trong cc s va vit c, hiu ca s ln nht v s b nht l:
Bi 18:
a) Vit 10 s l lin tip ln hn 14 nh hn 100:
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Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
04.6680.7124 : 0983.398.619 0978.288.562 in thoi: - Hotline
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b) Tnh hiu ca s cui v s u trong cc s va vit:
b) Vit hiu va tm c thnh tch ca mt s vi 3:
c) Vit s ln nht, nh nht c 2 ch s, sao cho tng cc ch s ca chng
bng 10 v hiu 2 ch s ca chng bng 4.
Bi 19: Cho cc ch s: 0,1,2,3;
1. Vit cc s c hai ch s khc nhau t cc s trn v sp xp cc s theo
th t ln dn:
2. Vit s ln nht trn di dng tch ca mt s vi 4:
* Bi 20: Cho cc s 0; 2; 4
a) Lp cc s c hai ch s khc nhau t cc s trn l:
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Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
04.6680.7124 : 0983.398.619 0978.288.562 in thoi: - Hotline
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CC CHUYN TON KH LP 2 THY HONG 0978.288.562 Trang 6
b) Trong cc s va lp c c s trn chc nh nht l:
c) Vit s thnh tch ca hai tha s lin nhau l:
Bi 21:
a. Hy cho bit c tt c bao nhiu s c hai ch s m tng hai ch s mi
s bng 7?
b. C bao nhiu s c hai ch s m hiu hai ch s ca mi s bng 6?
Bi 22:
a) C bao nhiu s c hai ch s ln hn 34?..................................................
b) C bao nhiu s c ba ch s b hn 425?..................................................
c) T 68 n 279 c bao nhiu s c ba ch s?..............................................
Bi 23: Tm tt c cc s c hai ch s b hn 24 m ch s hng n v ca n
ln hn 4?
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Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
04.6680.7124 : 0983.398.619 0978.288.562 in thoi: - Hotline
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CC CHUYN TON KH LP 2 THY HONG 0978.288.562 Trang 7
Bi 24:
a) C bao nhiu s c hai ch s b hn 54?
b) T 57 n 163 c bao nhiu s c hai ch s?
c) C bao nhiu s c ba ch s ln hn 369?
Bi 25: Cho s 63.S thay i th no nu?
a) Xo b ch s 3?
b) Xo b ch s 6?
Bi 26: Cho s a c hai ch s:
a) Nu ch s hng chc bt i 3 th s a gim i bao nhiu n v?
b) Nu ch s hng chc tng thm 4 th s a tng thm bao nhiu n v?
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Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
04.6680.7124 : 0983.398.619 0978.288.562 in thoi: - Hotline
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c) Nu ch s hng chc tng thm 1 v ch s hng n v gim i 1 th s a
tng thm bao nhiu n v?
* Bi 27:
S lin trc ca 223 l........................................................,
S lin trc ca a l.................................................................,
S lin trc ca m + 1 l:.........................................................
Bi 28:
a/ Vit cc s c hai ch s m ch s hng chc km ch s hng n v l 4:
................................................................................................................................
b/ Tm hai s khi bit tng ca chng bng 8 v hiu tch ca chng bng 0.
................................................................................................................................
................................................................................................................................
TM X
* Bi 1: Tm mt s, bit s cng vi 12 th bng 15 cng 27?
Bi 2: Tm mt s, bit 95 tr i s th bng 39 tr i 22?
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Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
04.6680.7124 : 0983.398.619 0978.288.562 in thoi: - Hotline
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Bi 3: Tm mt s, bit rng ly s nhn vi 5 ri tr i 12 th bng 38?
Bi 4: Tm s c 2 ch s, bit rng khi thm 2 n v vo s ta c s nh
hn 13?
Bi 5: S ln nht m khi em 4 nhn vi s c kt qu vn nh hn 30
l s.
Bi 6: S ln nht m khi em nhn 3 vi s c tch vn nh hn 25 l
s
Bi 7:
1) Hai s c tng l 73. Nu thm vo mt s hng 27 n v v gi nguyn
s hng kia th tng mi l bao nhiu? (Vit c php tnh).
2) Vit cc s c hai ch s m ch s hng chc gp 3 ch s hng n v.
Bi 8:
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Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
04.6680.7124 : 0983.398.619 0978.288.562 in thoi: - Hotline
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CC CHUYN TON KH LP 2 THY HONG 0978.288.562 Trang 10
1. Vit s chn ln nht c hai ch s m tng hai ch s l 13:
2. Vit s l nh nht c hai ch s m ch s hng chc gp 3 ln ch s hng
n v:
* Bi 9:
a. Tm mt s bit rng tng ca s vi 42 l 100
b. Tm mt s bit hiu ca 94 vi s bng 49.
Bi 10: Tm s c mt ch s, bit rng khi thm 1chc vo s ta c mt
s ln hn 18.
* Bi 11: Tm mt s bit rng s tr i 1 ri tr tip i 3 th c kt qu l
5.
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Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
04.6680.7124 : 0983.398.619 0978.288.562 in thoi: - Hotline
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Bi 12: Tm hai s m nu em cng li th c kt qu bng s ln nht c mt
ch s cn khi ly s ln tr s b th c kt qu bng 1.
Bi 13: Trong mt php tr c hiu bng 25. Nu gi nguyn s b tr v tng
s tr ln 7 n v th hiu mi bng bao nhiu?
Bi 14: Tm 2 s bit hiu ca chng l 49. Bit rng nu bt s b tr mt s
ng bng s tr th hiu mi s l 17.
Bi 15: Hai s c tng bng s chn ln nht c hai ch s, bit s b l 15. S
ln l:
* Bi 16:
Tng ln nht ca hai s c mt ch s l:
-
Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
04.6680.7124 : 0983.398.619 0978.288.562 in thoi: - Hotline
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Tng b nht ca s c mt ch v s c hai ch s l:
Bi 16: Cho hai s c 3 ch s
a) Hai s c cng s trm v s chc. Nhng cc s n v hn km nhau 5
n v. Hai s hn km nhau...................................... n v.
b) Hai s cng s chc v s n v nhng hai s trm hn km nhau 3 n
v. Hai s hn km nhau.....................................n v.
* Bi 17: Trong mt php cng, c s hng th nht bng 27, tng bng 75.
Tm s hng th hai.
Bi 18: Cho s 408:
a) Nu ch s hng trm bt i (hay tng thm) 2 th s gim i hay tng
thm bao nhiu n v?
b) S thay i th no nu i ch ch s 0 v ch s 8 cho nhau?
Bi 19: a) Hai s c hai ch s c cng ch s hng chc m ch s hng n
v hn km nhau 7 th hai s hn km nhau bao nhiu n v?
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Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
04.6680.7124 : 0983.398.619 0978.288.562 in thoi: - Hotline
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b) Hai s c hai ch s c cng ch s hng n v m ch s hng chc hn
km nhau 3 th s hn km nhau bao nhiu n v?
* Bi 20: Hy vit tt c cc s c hai ch s m khi c s theo th t t
tri qua phi hoc t phi qua tri th gi tr s vn khng thay i?
..
.
Bi 21: Hy tm s c ba ch s m hiu ca ch s hng trm v ch s hng
chc bng 0, cn hiu ca ch s hng chc v ch s hng n v bng 9.
Bi 22: a) C bao nhiu s c hai ch s ln hn 27?.....................................
b) C bao nhiu s c ba ch s b hn 534?..................................................
c) T 68 n 179 c bao nhiu s c ba ch s?..............................................
Bi 23: Bn An dng ht 27 ch s vit cc s lin nhau thnh mt dy s
lin tip: 1; 2; 3;.; a. Hi a l s no? (a l s cui cng ca dy s)
-
Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
04.6680.7124 : 0983.398.619 0978.288.562 in thoi: - Hotline
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Bi 24: Tm cc s c hai ch s m tng cc ch s l 13, tch l 36.
Bi 25: Cho s 572
a) S thay i th no nu tng ch s hng trm ln 2 n v?
b) S thay i th no nu gim ch s hng chc i 4 n v?
c) S thay i th no nu xo ch s hng n v?
Bi 26: Hy tm s c ba ch s m ch s hng trm nhn vi 3 c ch s
hng chc, ch s hng chc nhn vi 3 c ch s hng n v.
* Bi 27: a) Bit s lin trc ca a l 23, em hy tm s lin sau ca a?
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Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
04.6680.7124 : 0983.398.619 0978.288.562 in thoi: - Hotline
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b) Bit s lin sau ca b l 35, hy tm s lin trc ca b?
c) Bit s c khng c s lin trc, hi c l s no?
Bi 28: a) Vit tt c cc s c hai ch s v b hn 19?
b) Vit tt c cc s trn chc va ln hn 41 va b hn 93?
c) Hy tm hai s lin nhau, bit mt s c hai ch s, mt s c mt ch s?
Bi 29: a) Tm nhng s ln hn 35 m ch s hng chc ca n b hn 4.
b) Tm nhng s c hai ch s b hn 26 m ch s hng n v ca n ln hn
4?
Bi 31: Em hy vit 18 thnh tng ca cc s hng bng nhau (cng vit c
nhiu tng cng tt)
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Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
04.6680.7124 : 0983.398.619 0978.288.562 in thoi: - Hotline
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Bi 32: Tm cc s c 2 ch s. Bit Tng 2 s l 11 tch l 30. Tm 2 s .
Bi 33:
a) Tm s nh nht c 3 ch s m c tng bng 20.
b) Hy cho bit c bao nhiu s c 3 ch s m ch s hng trm l 5?
Bi 34: Tnh tng s b nht c 3 ch s vi s ln nht c 2 ch s?
* Bi 35: Tm mt s c hai ch s v mt s c mt ch s sao cho tng hai
s bng 10.
* Bi 36: Tm mt s c hai ch s v mt s c mt ch s sao cho hiu hai s
bng 1.
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Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
04.6680.7124 : 0983.398.619 0978.288.562 in thoi: - Hotline
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Bi 37: a) Tng ln nht ca hai s c mt ch s l bao nhiu?
b) Tng b nht ca s c mt ch s v s c hai ch s l bao nhiu?
c) Hiu ln nht ca s c hai ch s l bao nhiu?
d) Hiu b nht ca s c hai ch s v s c mt ch s l bao nhiu?
* Bi 38: Tm hai s bit tch ca chng bng 3 v thng ca chng cng
bng 3.
Bi 39: a) Tm mt s, bit tng ca s vi 45 bng s b nht c ba ch s?
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Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
04.6680.7124 : 0983.398.619 0978.288.562 in thoi: - Hotline
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b) Tm mt s, bit hiu ca s vi 28 bng s b nht c 1 ch s?
c) Tm mt s, bit hiu ca 89 vi s bng 15?
Bi 40: Cho s 346.
a) S thay i th no nu gim ch s hng trm i 2 n v?
b) S thay i th no nu tng ch s hng chc thm 5 n v?
c) S thay i th no nu xo ch s hng n v?
Bi 41: a) Tm s b tr, bit tng ca s tr v hiu l 87.
b) Tm s tr, bit hiu hai s km s b tr l 56.
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Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
04.6680.7124 : 0983.398.619 0978.288.562 in thoi: - Hotline
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CC CHUYN TON KH LP 2 THY HONG 0978.288.562 Trang 19
c) Tm s b tr, bit s b tr hn s tr 24 v hiu ca hai s bng s tr?
Bi 42: a) nh s cc trang ca mt cun sch t 1 n 19, ta phi dng ht
bao nhiu s?
b) nh s cc trang ca mt cun sch t 10 n 25, ta phi dng ht bao
nhiu s?
c) nh s cc trang ca mt cun sch t 120 n 129, ta phi dng ht bao
nhiu s?
Bi 43: nh s trang ca mt quyn sch dy 17 trang th ta phi dng ht
bao nhiu ch s?
Bi 44: nh s trang mt quyn sch t 134 n 143, ta phi dng ht bao
nhiu ch s?
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Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
04.6680.7124 : 0983.398.619 0978.288.562 in thoi: - Hotline
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CC CHUYN TON KH LP 2 THY HONG 0978.288.562 Trang 20
Bi 45: nh s trang ca mt quyn sch dy 19 trang th ta phi dng ht
bao nhiu ch s?
..
Bi 46: nh s trang mt quyn sch t 124 n 122, ta phi dng ht bao
nhiu ch s?
Bi 47: Bn An dng ht 29 ch s vit cc s lin nhau thnh mt dy s
lin tip: 1; 2; 3;.; a. Hi a l s no? (a l s cui cng ca dy s)
-
Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
04.6680.7124 : 0983.398.619 0978.288.562 in thoi: - Hotline
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II. CHUYN NGY THNG NM V TNH TUI
* Bi 1: Th hai tun ny l ngy 19 thng 3. vy;
Th hai tun trc l ngy .;
Th hai tun sau l ngy ;
Bi 2: Hm nay l th hai ngy 4 thng 5. Nh vy cn cch ngy sinh nht
ca Minh 10 ngy na. Hi sinh nht ca Minh l ngy my ca thng 5, vo
ngy th my trong tun?
* Bi 3: a) Th nm tun ny l ngy 16 thng 3.
Th nm tun trc l ngy ..
Th nm tun sau l ngy ...
Bi 4: Th ba u tin ca thng t l ngy mng 3. Hi cc ngy th ba tip
theo ca thng t l nhng ngy no?
-
Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
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CC CHUYN TON KH LP 2 THY HONG 0978.288.562 Trang 22
Bi 5: Nm nay k nim ngy quc t lao ng 1 - 5 vo th t. Em c bit nm
nay k nim ngy thnh lp i 15 - 5, k nim ngy sinh nht Bc 19 - 5 vo
th my trong tun?
Bi 6: Mt thng no c ngy ch nht l ngy 2 ca thng . Hi cc ngy
ch nht trong thng l nhng ngy no?
Bi 7: B i cng tc xa trong hai tun, b i hm th hai ngy 5. Hi n ngy
my b s v? Ngy y l th my trong tun?
-
Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
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* Bi 8: Th 5 tun ny l ngy 8 thng 7. Hi th 5 tun trc l ngy no?
* Bi 9: Th su tun ny l ngy 16 thng 9. Hi th 7 tun sau l ngy no?
* Bi 10: Hm nay l ngy 21 th bng gi tun trc l ngy:
Bi 11: Th t tun trc l ngy 14 th th su tun ny l ngy
Bi 12: Hng mun bit sinh nht ca mnh 15 thng 6 l ngy th my. Bn
Mai li cho bit ngy 7 thng 6 l ngy th 3. Em hy gip bn Hng bit ngy
sinh nht ca bn l ngy th my?
Bi 14: Ngy 3 thng 2 nm 2001 l th ba. Hi:
Ngy 11 thng 2 nm 2001 l th .
Trong thng 2 c .. ch nht? (Bit rng thng 2 c 28 ngy)
-
Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
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Bi 15: Bn Mai mun bit ngy khai ging nm hc 5 - 9 l vo th my. Bn
Lan li cho bit " ngy 25 - 9 l vo th hai". Em c th gip bn Mai bit ngy
khai ging l th my trong tun khng?
Bi 16: Bn Mn v qu thm b. Bn Mn c vi b va ng mt tun
v ngy 6 ngy. Tnh ra bn Mn ch nh b c 1 ch nht thi. Hi bn Mn
n nh b vo th my trong tun?
Bi 17: Hm nay l th hai, ngy 14 thng 4. Cn 8 ngy na l sinh nht ca
Lan. Vy Lan sinh nht vo th.. ngy.thng 4.
b) Ngy sinh nht ca Hng l 20 thng 9 l ngy Ch nht. Hy in tip vo
vo ch chm ngy ca thng.
- Ch nht tun u ca thng l ngy:
- Ch nht cui cng ca thng l ngy:
-
Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
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Bi 18: Th hai tun ny l ngy mng 2. Hi th t tun sau l ngy no? V
sao?
Bi 19: Mt thng no c ngy ch nht l ngy 2 ca thng . Hi cc
ngy ch nht trong thng l nhng ngy no?
* Bi 21: Th hai tun ny l ngy 12 thng 3 vy
a/ Th hai tun sau l ngy my? ..
b/ Th hai tun trc l ngy my? ..
Bi 22:
a, Lan sinh vo ngy no m c 4 nm Lan mi c sinh nht ng ngy mt
ln?
b, Th hai tun ny l ngy 2 thng 4. Hi th nm tun sau na l ngy no?
-
Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
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Bi 23: M hn Lan 25 tui, B hn M 6 tui. Hi tui ca Lan l bao nhiu?
Bit rng tui B l 46.
Bi 24: Mai hn Tng 3 tui v km Hi 2 tui. o nhiu hn Mai 4 tui. Hi
ai nhiu tui nht? Ai t tui nht, ngi nhiu tui nht hn ngi t tui nht
l my tui?
Bi 25: Hin nay b 40 tui, con 9 tui. Vy khi b 52 tui th con c s tui
l: tui.
Bi 26: Hin nay b Mai 41 tui cn ng ni Mai 70 tui. Vy khi tui ca ng
ni Mai bng tui ca b Mai hin nay th lc b Mai c s tui l
.. tui.
Bi 27: Tng s tui ca m v con nhiu hn tui con l 50 tui. M hn con
27 tui. Tnh s tui ca mi ngi.
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Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
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Bi 28: Nm nay con 8 tui, m 32 tui. Hi trc y 2 nm tui m cng vi
tui con l bao nhiu?
Bi 29: Hin nay Mai 7 tui, Hoa 10 tui, Hng 9 tui. n khi Bn Mai bng
tui bn Hng hin nay th tng s tui ca ba bn l bao nhiu?
Bi 30: Nm nay An 6 tui. Sau 3 nm na th tui ca m gp 4 ln tui ca
An. Hi m nm nay bao nhiu tui?
-
Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
04.6680.7124 : 0983.398.619 0978.288.562 in thoi: - Hotline
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Bi 31: Ba nm trc Tn ln 6 tui. Hi sau 5 nm na Tn bao nhiu tui.
.......................................................
.......................................................
.......................................................
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...........................................................
...........................................................
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...........................................................
Bi 32: Nm nay b 36 tui, ng nhiu hn b 27 tui. Hi ng nm ny bao nhiu
tui?
Bi 33: Hin nay anh 23 tui, em 15 tui. Tng s tui ca hai anh em khi tui
em bng tui anh hin nay l .tui.
Bi 34: Khi Mai 8 tui th m 35 tui. Hy tnh tng s tui ca hai m con
Mai khi Mai 22 tui?...........................................
Bi 35: Khi An 20 tui th m 49 tui. Hy tnh tng s tui ca hai m con An
khi An 9 tui?.....................................................
III. CHUYN CC BI TON TNH CHU VI
Bi 1: Hnh tam gic ABC c ba cnh bng nhau v c chu vi bng 24 cm.
Tm di mt cnh.
-
Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
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* Bi 2: Tnh chu vi hnh tam gic ABC c di cc cnh l 7dm, 19 cm,
4dm3cm.
Bi 3: ng ghi , sai ghi S vo trng:
a) Chu vi ca hnh tam gic l s o cc cnh ca tam gic .
b) Chu vi ca hnh t gic l tng di cc cnh ca hnh t gic .
c) Tng di cc cnh ca hnh tam gic l chu vi ca hnh tam gic .
d) S o cnh ca t gic gi l chu vi ca t gic .
Bi 4: Cho tam gic ABC c di cnh AB bng na cnh BC v bng 5cm,
di cnh AB = AC. Tnh chu vi tam gic ABC.
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Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
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Bi 5: Hnh tam gic ABC c tng di hai cnh AB v BC bng 47 cm, chu
vi tam gic ABC bng 63 cm. Tm di cnh AC.
* Bi 6: Tnh chu vi tam gic ABC bit di ca cc cnh ln lt l AB = 11
cm; BC = 1 dm3cm; CA = 1dm5cm?
* Bi 7: Tnh chu vi hnh tam gic c di cc cnh l 2dm; 4dm; 27cm.
Bi 8: Hnh tam gic ABC c tng di hai cnh AB v BC bng 47 cm, chu
vi tam gic ABC bng 79 cm. Tm di cnh AC.
-
Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
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Bi 9: Hnh tam gic ABC c tng di hai cnh AB v BC bng 51 cm, chu
vi tam gic ABC bng 69 cm. Tm di cnh AC.
Bi 10: Hnh tam gic ABC c 3 cnh bng nhau v c chu vi bng 24cm.Tnh
di cnh AB?
* Bi 11: Cho mt hnh tam gic c di cc cnh l 9dm; 12dm; 8dm. Tnh
chu vi hnh tam gic ?..............................
Bi 12: Cho mt hnh tam gic c chu vi bng 18dm. Ngi ta gim u mi
cnh ca hnh tam gic thm 3dm th c mt hnh tam gic mi. Tnh chu
vi hnh tam gic mi?....................................
Bi 13: Cho mt hnh tam gic c chu vi bng 30 cm. Ngi ta gim u mi
cnh ca hnh tam gic i 4 cm th c mt hnh tam gic mi. Tnh chu vi
hnh tam gic mi?.....................................
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Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
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* Bi 14: Cho mt hnh t gic c cc cnh l 8dm; 15dm; 9dm v 127 dm.
Tnh chu vi hnh tam gic ?.............................
Bi 15: Cho mt hnh tam gic c di 3 cnh bng nhau v bng 13cm v
mt hnh vung c cnh 11cm. Hi hnh no c chu vi ln hn?.........................
Bi 16: Tnh chu vi tam gic ABC bit cnh AB di 12 cm. Cnh BC bng 12
(mt na) cnh AB. Cnh AC di gp 3 ln cnh BC?
* Bi 17: Hnh tam gic c di cc cnh ln lt l 1dm; 5cm; 7cm th c
chu vi l:
A. 13cm B. 26cm C. 22cm D. 13dm
* Bi 18: Tnh chu vi hnh tam gic ABC, bit di cc cnh l: AB = 35cm,
BC =15 cm, AC = 45cm.
Bi 19: Tnh chu vi hnh tam gic bit mi cnh ca tam gic u bng 5cm.
-
Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
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* Bi 10: Chu vi hnh tam gic ABC c di cc cnh: AB = 34 cm; BC = 20
cm; AC = 16 cm
A. 70 cm B. 54 cm C. 60cm
Bi 11: Hnh tam gic ABC c chu vi l 24dm. di hai cnh AB v BC
bng 18dm. Hi cnh AC di bao nhiu -xi-mt?
Bi 12: Hnh t gic ABCD c 4 cnh bng nhau v c chu vi 2dm. Tm di
cnh AB?
Bi 13: Mt hnh t gic c 4 cnh bng nhau v c chu vi l 24 cm. Tnh cnh
ca t gic y?
-
Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
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Bi 14: Tnh chu vi hnh t gic MNPQ, bit di mi cnh ca hnh u
bng 4 cm.
Bi 15: Cho mt hnh t gic c chu vi bng 32cm. Ngi ta tng u mi cnh
ca hnh t gic thm 2cm th c mt hnh t gic mi. Tnh chu vi ca
hnh t gic mi?...................................................
Bi 16: Cho hnh t gic nh hnh v A 3cm B
a) Tnh chu vi ca hnh t gic ABCD. 2cm 4cm
b) K thm 1 on thng c 1 hnh t gic D
v 1 hnh tam gic. 6cm C
Bi 17: Tnh chu vi hnh t gic MNPQ c di mi cnh l 5dm.
-
Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
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Bi 18: Hnh t gic ABCD c 4 cnh bng nhau v c chu vi l 40 cm. Tm
di cnh AB.
Bi 19: Tnh chu vi t gic ABCD bit cnh AB di 8 cm, ngn hn cnh BC 4
cm, cnh BC di gp i cnh CD v cnh AD l s ln nht c 1 ch s?
Bi 20: Tnh chu vi t gic ABCD bit s o cnh ngn nht AB l 10 cm. S
o cc cnh tip theo l cc s t nhin lin tip.
Bi 21: V hnh minh ho: (CC BI TON C BIT)
C 6 cy trng thnh: 3 hng, mi hng 3 cy v 3 hng mi hng 2 cy.
-
Trung tm Bi dng vn ha Thnh Cng - Thnh Cng Study
a ch ng k: S 6, L A1, Tiu khu Ngc Khnh, Ba nh, H Ni
C s 2: S 86 Tn Mai, qun Hong Mai, H Ni (gn trng Tiu hc Tn Mai)
S 45 Thi Sch, Hai B Trng, H Ni C s 3:
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Bi 22: C mt ci cn a vi hai qu cn loi 1kg v 5kg. Lm th no cn
c 3 kg go qua 2 ln cn.
Bi 23: Em hy in s thch hp vo trng khi cng cc s theo hng
ngang, theo ct dc, theo ng cho u c kt qu nh nhau.
8
10
12
Mi thng tin ng ti v ti liu v lp hc, qu ph huynh vui lng gi qua
Email: [email protected] c gii p.
Chc cc con hc tt v lun tin b!
mailto:[email protected]