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棋谜式益智健脑趣味数学展示版
IQ MATH CHESS PUZZLES SAMPLE WORKSHEETS
HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
FRANK HO, AMANDA HO 2013, ALL RIGHTS RESERVED.
STUDENT NAME: _______________________ ASSIGNMENT DATE: ________________
1
Answer
1. Ho Math Chess Assessment of math basics
22, 6, 9, 23, 11
29, 6, 65, 7, 10
6, 53, 9, 9, 8
2. Assessment of math basics - subtraction
11, 7, 1, 26, 7
38, 2, 8, 18, 13
16, 19, 21, 14, 58
3. Assessment of math basics - subtraction
164, 108, 85, 594, 7
148, 92, 8, 18, 19
26, 109, 223, 14, 158
4. Assessment of mental math from 1 to 10
2 numbers + –
Larger number smaller
number.
(Answer written in fraction
if not divisible.)
__4___, __2___ 6 2 ______ 8 ______ 2
_____, _____6,3 9 ______ 3 18 ______ 2
_____, _____2,1 3 ______ 1 ______ 2 2
_____, _____9, 5 14 ______ ______ 9/5
_____, _____8, 7 15 1 ______56 8/7
_____, _____8,3 ______ 11 5 24 8/3
_____, _____9, 3 12 6 ______ 27 ______ 3
_____, _____6,2 ______ 8 4 12 ______ 3
_____, _____6,8 14 2 ______ 48 8/6=4/3
棋谜式益智健脑趣味数学展示版
IQ MATH CHESS PUZZLES SAMPLE WORKSHEETS
HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
FRANK HO, AMANDA HO 2013, ALL RIGHTS RESERVED.
STUDENT NAME: _______________________ ASSIGNMENT DATE: ________________
2
5. Assessment of mental math from 11 to 18
__14_, __5___ 19 9 ______ 70 ______
_____, _____ 16,8 24 ______ 128 ______ 2
_____, _____12,4 ______ 16 ______ 8 48 3
_____, _____17,9 26 8 ______ 153 ______ 17/9
_____, _____18, 9 ______ 27 9 ______ 162 2
_____, _____11,7 18 4 ______ 77 ______ 11/7
_____, _____13, 5 18 8 ______ 65 ______ 13/5
_____, _____14,7 ______ 21 ______ 7 98 2
_____, _____18,9 ______ 27 9 ______ 162 2
6. Assessment of word problems – addition and subtraction
1. 25 – 3 = 22 to remove the extra sheets 22/2=11,
2. Andrew = 11 + 3 = 14, Wendy = 11- 3= 8
Andrew 13, Wendy 19
3. 22
4. 33
5. The difference is really 4 between 2 persons. So 24 – 4= 20, 20/2 = 10 this is the amount each person have the equal
number of cookies and it is also Meghan’s cookies so it is 10. Coco’s cookies = 10 + 4 = 14.
6. Andrew’s age now is 12- 5 = 7 Meghan’s age now 5 + 5 = 10, 10 + 7 = 17
7. Spatial relation and logic
0 5, 50, 14, 41, 23, 32
3
2
8. Assessment of multiplication
1 2 6 1
3 1 2 2
9. Assessment of multiplication
3 2 2 1
1 3 6 1
2 3 3 1
10. Assessment of multiplication (order of operation)
6+4x5=26, 21. 41, 46, 31, 51, 16, 11
棋谜式益智健脑趣味数学展示版
IQ MATH CHESS PUZZLES SAMPLE WORKSHEETS
HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
FRANK HO, AMANDA HO 2013, ALL RIGHTS RESERVED.
STUDENT NAME: _______________________ ASSIGNMENT DATE: ________________
3
11. Whole number multiplying or dividing by a whole number
, 12.0, 1200%
220/1, 220.0, 22000%
,1467000000%
10001/1, 10001.0, 1000100%
,900405.2, 90040523%
12. Word problems for multiplication and division
This is to evaluate the student’s multiplication or division ability.
5 , 11, 95, 15, $6, 15,
5050 (1 + 100) /2 x 50, 2500 (1 + 99) /2 x 50, 2550 (2 + 102)/2 x50
Those can be divisible by 9 are: 9, 18, 27, 36, 45, 54, 63, 72, 81 and their total is 405.
5050 – 405 = 4645.
2f + 3 f + 1.5 f = 58500, f = 9000
13. Whole number operations
325, 325 + 45 +15 +105 + 135
795
515
325
425
245
14. Whole number operations
40, 40 + 50 - 20 + 10 = 2 40
32
38
42
44
52
24 12
2 1
14670000
1
23900405
100
棋谜式益智健脑趣味数学展示版
IQ MATH CHESS PUZZLES SAMPLE WORKSHEETS
HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
FRANK HO, AMANDA HO 2013, ALL RIGHTS RESERVED.
STUDENT NAME: _______________________ ASSIGNMENT DATE: ________________
4
15. Assessment of decimal division
256
Two
hundred
fifty-six
200+50+6 2.56x102
28 256.00 256.0 260
0.256 Two
hundred
Fifty-six
thousandth
0.2 + 0.25
+0.006
2.56 x 10 -
1
NA 0.26 0.3 0
25610
Twenty-
five
thousand
six
hundred
ten
20000+5000
+600 +10
2.561 x
104
2561 x 2 x 5
2561.00 2561.0 25600
2.56 Two and
fifty-six
hundredth
2 +0.5 + 0.006 2.56 NA 2.56 2.6 0
2561 Two
thousand
five
hundred
sixty-one
2000 + 500 +
60 + 1
2.561 x
103
NA 2561.00 2561.0 2560
256
1
32
125
25610
1
142
25
2561
1
棋谜式益智健脑趣味数学展示版
IQ MATH CHESS PUZZLES SAMPLE WORKSHEETS
HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
FRANK HO, AMANDA HO 2013, ALL RIGHTS RESERVED.
STUDENT NAME: _______________________ ASSIGNMENT DATE: ________________
5
16. Percent
Students 250 ? 210 220 ? 240 ? 80 1000
% ? 25% 21% ? 22% 24% 8%
? $7355.56 9% commission ? $662 $1000 NA 1662
$150 5% commission over
$100
? $7.50 $300 NA ? $307.50
$250 4% discount ? $10 NA NA ? $240
$40 ? 45% ? $18 NA ? Profit $58
? $625 20% ? $125 NA loss $500
? $600 20% ? $120 NA profit $720
$126 Mark down 30% NA NA ? $88.20
$87
? 33 %
$29 NA NA ? $116
? $100 Tax 20% $20 NA NA $120
$200 Tax ? 50.5% $61 NA NA $261
17. Fraction, decimal, exponent, proportion, integer
$1, 6, 10000, 1000, 504, 3/2, 17, 5, 1800, 4, 3/2, -12, 16, -23, 25
12, -24, 27, -11,
10.5, 0.3993, 2/3, 50, 6/5, 63/4, 182/135
18. Decimal and measurement of length
1000, 100000, 1000000; 0.001, 100, 1000; 0.00001, 0.01, 10; 0.1, 100, 1000, 10000;
0.0001, 0.1, 10, 100; 0.00001, 0.01, 0.1, 1; 0.015, 150, 1500; 0.023, 23, 2300, 23000;
1.234, 1234, 123400; 1378, 13780, 137800; 0.000245, 24.5, 245
2 3.89, 3 14 0 0, 23 458, 5.45, 2383.85, 4674.56, 7190
1
3
棋谜式益智健脑趣味数学展示版
IQ MATH CHESS PUZZLES SAMPLE WORKSHEETS
HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
FRANK HO, AMANDA HO 2013, ALL RIGHTS RESERVED.
STUDENT NAME: _______________________ ASSIGNMENT DATE: ________________
6
38. Connecting Rooks
66. Maze
棋谜式益智健脑趣味数学展示版
IQ MATH CHESS PUZZLES SAMPLE WORKSHEETS
HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
FRANK HO, AMANDA HO 2013, ALL RIGHTS RESERVED.
STUDENT NAME: _______________________ ASSIGNMENT DATE: ________________
7
76. One loop
91. Spatial relation and Subtraction operation
11-3=8 7+4=11 12-5=7 11+1=12
11-5=6 5+6=11 12-11=1 9+3=12
11-4=7 9+2=11 12-6=6 3+9=12
11-9=2 8+3=11 12-3=9 8+4=12
11-2=9 3+8=11 12-7=5 6+6=12
11-6=5 6+5=11 12-8=4 5+7=12
11-7=4 4+7=11 12-4=8 7+5=12
棋谜式益智健脑趣味数学展示版
IQ MATH CHESS PUZZLES SAMPLE WORKSHEETS
HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
FRANK HO, AMANDA HO 2013, ALL RIGHTS RESERVED.
STUDENT NAME: _______________________ ASSIGNMENT DATE: ________________
8
92. Chess intersection and set
4+7=11, 11+5=16, 10+7=17, 11+7=18, 11+16+17+18=62, 11+4=15, 16+10+17=43
106. Spatial relation and Subtraction operation
11-3=8 7+4=11 12-5=7 11+1=12
11-5=6 5+6=11 12-11=1 9+3=12
11-4=7 9+2=11 12-6=6 3+9=12
11-9=2 8+3=11 12-3=9 8+4=12
11-2=9 3+8=11 12-7=5 6+6=12
11-6=5 6+5=11 12-8=4 5+7=12
11-7=4 4+7=11 12-4=8 7+5=12
107. Spatial relation and subtraction operation
13-11=2 7+6=13 14-9=9 11+3=14
13-5=8 5+8=13 14-12=2 9+5=14
13-4=9 9+4=13 14-6=8 12+2=14
13-9=4 8+5=13 14-11=3 8+6=14
13-12=1 11+2=13 14-7=7 13+1=14
13-6=7 6+7=13 14-8=6 5+9=14
13-7=6 4+9=13 14-13=1 7+7=14
108. Spatial relation and subtraction operation
15-13=2 15-7=8 16-15=1 11+5=16
15-6=7 15-13=2 16-7=9 13+3=16
15-12=3 15-12=3 16-12=4 12+4=16
15-11=4 15-8=7 16-11=5 8+8=16
15-14=1 15-11=4 16-14=2 9+7=16
15-9=6 15-6=9 16-9=5 14+2=16
15-8=7 15-14=1 16-13=3 15+1=16
109. Spatial relation and subtraction operation
17-9=8 11+6=17 18-15=31 13+5=18
17-16=1 13+4=17 18-16=2 14+4=18
17-12=5 12+5=17 18-17=1 12+6=18
6, 8+9=17, 6, 9 + 9 = 18
3, 15+2=17, 4, 11+7=18
2, 16+1=17, 7, 16+2=18
4, 14+3=17, 5, 15+3=18
棋谜式益智健脑趣味数学展示版
IQ MATH CHESS PUZZLES SAMPLE WORKSHEETS
HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
FRANK HO, AMANDA HO 2013, ALL RIGHTS RESERVED.
STUDENT NAME: _______________________ ASSIGNMENT DATE: ________________
9
110. Spatial relation and subtraction operation
6 7+12=19 6 11+10=21
13 13+6=19 14 13+8=21
7 12+7=19 9 12+9=21
3 8+11=19 5 8+13=21
5 11+8=19 5 9+12=21
14 6+13=19 12 14+77=21
11 14+5=19 8 15+6=21
110. Spatial relation and multiplication operation
6 27 32 35
4 21 20 30
10 9 28 15
16 6 8 10
18 24 16 40
14 15 24 45
8 18 36 20
12 12 12 25
111. Spatial relation and multiplication operation
64 63
12 49 40 54
30 21 56 27
48 14 16 18
54 56 32 72
42 35 48 81
24 42 72 36
36 28 24 45
112. Spatial relation and multiplication operation
72 85
24 51 60 70
30 9 68 65
36 36 48 60
38 54 56 90
34 45 64 95
28 48 76 70
32 42 52 75
棋谜式益智健脑趣味数学展示版
IQ MATH CHESS PUZZLES SAMPLE WORKSHEETS
HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
FRANK HO, AMANDA HO 2013, ALL RIGHTS RESERVED.
STUDENT NAME: _______________________ ASSIGNMENT DATE: ________________
10
113. Spatial relation and multiplication operation
144 153
72 119 120 144
90 21 136 117
108 84 96 108
114 126 72 146
102 105 128 171
84 112 172 126
96 98 104 135
114. Addition and subtraction
Fill in 2 circles with 2 consecutive natural numbers having a difference of 1
3,2; 6,5; 7,6; 9,8; 11,10; 17, 16; 10,9
115. Addition and subtraction
15,14;13,12;16,15;22,21;39,38;36,35;28,27;41,40
116. Addition and subtraction
8,7;18,17;21,20;16,15;35,34;29,28;47,46;36,35
117. Addition and subtraction
21,19;30,28;27,29;19,21;34,36;28,26;47,49;39,41
118. Addition and subtraction
10,8;5,3;3,1;18,16;34,32;41,43;28,26;17,15
119. Addition and subtraction
8,6;10,8;12,10;6,4;13,11;16,14;15,17;9,11
120. Multiplication and addition
8,6;17,2;7,6;12,2;25,1;8,6;9,3;9,8
121. Multiplication and subtraction
16,3;7,2;6,2;7,3;8,2;8,5;9,5;7,4
棋谜式益智健脑趣味数学展示版
IQ MATH CHESS PUZZLES SAMPLE WORKSHEETS
HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
FRANK HO, AMANDA HO 2013, ALL RIGHTS RESERVED.
STUDENT NAME: _______________________ ASSIGNMENT DATE: ________________
11
122. Division and addition
3,1;6,2;8,4;18,3;24,4;36,2;27,3;21,3
123. Division and subtraction
9,1;68,2;96,8;28,2;48,3;36,2;39,3;72,8
124. Multiplication and division
2,2;4,2;22,2;8,4;12,4;7,7;8,2;9,3
131. Basic Fractions (Leave answers in simplified and mixed fractions if possible.)
135. + − divide
47, 208, 33, 135, 28, 17, 72, 36
139. IQ math chess puzzles
4+2=6, 1+2=3
3+3=6, 2+3=5
2+2=4, 4+5=9
1+2=3, 3+
147. Math basics
50,50,50,49,8,10,82,85,10,80,7,9
4x5 + 1 + 2 + 3
3x5+1+2+4
9x8+1+2+3+4+5+6+7
棋谜式益智健脑趣味数学展示版
IQ MATH CHESS PUZZLES SAMPLE WORKSHEETS
HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
FRANK HO, AMANDA HO 2013, ALL RIGHTS RESERVED.
STUDENT NAME: _______________________ ASSIGNMENT DATE: ________________
12
148. Fill in each box with one different digit from 1 to 9 to get the same answer.
1+6, 2+5,3+4,1+8,2+7,3+6, 4+5,1+2,1+3,1+4,2+3,1+7,2+6,3+5,1+3
149. Fill in each box with one different digit from 1 to 9 to get the same answer.
1+5, 2+4, 1+9, 2+8, 3+7, 4+6, 9+8, 9+6, 8+7, 7+6, 9+4, 8+5, 6+5, 7+4, 8+3
150. Fill in each box with one different digit from 1 to 9 to get the same answer.
9+8, 9+7, 9+6, 7+8, 9+5, 6+8, 9+4, 5+8, 7+6, 9+3, 4+8, 7+5, 7+1, 6+2, 5+3
151. Fill in each box with one different digit from 1 to 9 to get the same answer.
9+3, 8+4, 7+5, 9+2, 8+3, 7+4, 9+1, 8+2, 7+3, 6+4, 4+8, 7+5, 3+9, 1+5, 4+2
152. Fill in each box with one different digit from 1 to 9 to get the same answer.
11-2, 12-3, 13-4, 14-5,15-6,16-7,17-8,118-9,11-3,12-4,13-5,14-6,15-7,16-8,17-9
153. Sum and difference
8+6=14,8-6=2,9+8=17, 9-8=1, 9+4=13,9-4=5, 9+5=14,9-5=4
154. Sum and difference
6+5=11,6-5=1,7+3=10, 7-3=4, 9+6=15,9-6=3,7+4=11,7-4=3
155. Fill in each box with one different digit from 1 to 9 to get the same answer.
9= 1, 2, 6 1,3,5 2,3,4
21= 4, 8,9 5,7,9 6,7,8
24=7,8,9
7= 1,2,4
23=6,8,9
156. Fill in each box with one different digit from 1 to 9 to get the same answer.
7=1,2,4
15=1,5,9 1,6,8 2,4,9 2,5,8 2,6,7 3,4,8 3,5,8 4,5,6
棋谜式益智健脑趣味数学展示版
IQ MATH CHESS PUZZLES SAMPLE WORKSHEETS
HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
FRANK HO, AMANDA HO 2013, ALL RIGHTS RESERVED.
STUDENT NAME: _______________________ ASSIGNMENT DATE: ________________
13
157. Fill in each box with one different digit from 1 to 9 to get the same answer.
8 = 1,2,5 1,3,4
17=1,7,9 2,6,9 2,7,8 3,5,9 368 458 467
158. Fill in each box with one different digit from 1 to 9 to get the same answer.
22=589 679
18=189 279 369 378 459 468 567
159. Fill in each box with one different digit from 1 to 9 to get the same answer.
10=127 136 145 235
20=389 479 569 578
160. Math and puzzles
25+11=6x6
5+11=4x4
Fill in each box with a number.
7
7
8
,, , , , , _ , , , ___ , __
5 (7,17,27,37,47)
棋谜式益智健脑趣味数学展示版
IQ MATH CHESS PUZZLES SAMPLE WORKSHEETS
HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
FRANK HO, AMANDA HO 2013, ALL RIGHTS RESERVED.
STUDENT NAME: _______________________ ASSIGNMENT DATE: ________________
14
161. Math and puzzles
9
4
4, 9, 13
50
13
44 + 10 = 54
54 / 2 = 27
27 –10 = 17
棋谜式益智健脑趣味数学展示版
IQ MATH CHESS PUZZLES SAMPLE WORKSHEETS
HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
FRANK HO, AMANDA HO 2013, ALL RIGHTS RESERVED.
STUDENT NAME: _______________________ ASSIGNMENT DATE: ________________
15
162. Math and puzzles
Evaluate and show your work. Fill in a number in each symbol. The same symbol represents the same number.
11
6
17
1
50
Complete the following pattern.
24
20
9
15
22
10
163. Math and puzzles
100-99=1
100-91=9
7
4
6
棋谜式益智健脑趣味数学展示版
IQ MATH CHESS PUZZLES SAMPLE WORKSHEETS
HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
FRANK HO, AMANDA HO 2013, ALL RIGHTS RESERVED.
STUDENT NAME: _______________________ ASSIGNMENT DATE: ________________
16
164. Math and puzzles
40, 30 , , 13
165. Math and puzzles
40,25, 8
166. Basic math
0, 4
? + 3 – 4 – 4 + 3 = 33
33 – 3 + 4 + 4 – 3 = 35
24-12=12
36-12=24
72-12
60
59-12=47
12-12= 0
25+12=37
棋谜式益智健脑趣味数学展示版
IQ MATH CHESS PUZZLES SAMPLE WORKSHEETS
HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
FRANK HO, AMANDA HO 2013, ALL RIGHTS RESERVED.
STUDENT NAME: _______________________ ASSIGNMENT DATE: ________________
17
167. Math basics
9 – 1 + 90 – 1 +900 – 1 + 9000 – 1+ 90000 – 1 = 99999 – 5 = 99994
500 – 100 – 100 – 100 = 200
Since the number of total apples is the same as the total number of pears so the total must be the LCM of 4 and 7 between 40
and 60.
40 < 7A + 4P < 60 , 7A=4P=28 So the total must be 56. Apples = pears=28
? 6 LCM
168. Math basics
24, 60+60-1+60+2+60+1+60-3+60-2+60-1+60+3+60+1 = 9x60 = 540
Width = 0.25 area=0.45x10000=4500
4500/25=180cm
169. Math basics
(This is the one all others adding up to 10.)
36
150 x 100 = 15000 15000 x 2 = 30000
30000 / 200 = 150
The fourth and sixth ones.
Each number x 2 then add 1 to get the next one. The 32 should be 31.
棋谜式益智健脑趣味数学展示版
IQ MATH CHESS PUZZLES SAMPLE WORKSHEETS
HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
FRANK HO, AMANDA HO 2013, ALL RIGHTS RESERVED.
STUDENT NAME: _______________________ ASSIGNMENT DATE: ________________
18
170. IQ math fitness
3 cancelled with 3, 10 +10 + 10 =30
20
17=9+8 13 = 7 + 6, 8+5, 7+6 12 = 9+3, 8+4, 7+5
171. IQ math fitness
5, 60, 8 + 8 = 16, 16 – 4 = 8+ 4
3 + 3 + 8 + 8 = 11 + 11
10
173. Amandaho Moving Dots Puzzle ™
4 in the middle, move 1 from left, move 3 from right.
174. Amandaho Moving Dots Puzzle ™
6 in the middle move 4 from left, move 2 from right.
175. Amandaho Moving Dots Puzzle ™
3 in the middle, move 2 from left, move 1 from right.
176. Amandaho Moving Dots Puzzle ™
5 in the middle, move 2 from left, move 3 from right.
棋谜式益智健脑趣味数学展示版
IQ MATH CHESS PUZZLES SAMPLE WORKSHEETS
HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
FRANK HO, AMANDA HO 2013, ALL RIGHTS RESERVED.
STUDENT NAME: _______________________ ASSIGNMENT DATE: ________________
19
181. Amandaho Moving Dots Puzzle ™
4 in b 3, 1 in d2, 1 in c1.
182. Amandaho Moving Dots Puzzle ™
2 in b3, 1 in c2, 1 in d3
184. Amandaho Moving Dots Puzzle ™
move 4 from b3, move 5 from c4, move 2 from d2, move 6 from c2.
185. Amandaho Moving Dots Puzzle ™
Middle number is 13. Move left 2, move right 3, move top 3, move down 5.
187. Frankho Cube Math™
5+4=9 2+4=6
1+6=7 3+5=8
1+4=5 5+6=11
2+3=5 3+5=8
188. Frankho Cube Math™
1+3=4 5+1=6
2+4=6 4+1=5
3+2=5 6+2=8
5+1=6 6+6=12
189. Frankho Cube Math™
3+ 9 = 12, 6 + 9 = 15
8 + 6 = 14, 5 + 2 = 7
3 + 8 = 11, 8 + 6 = 14
9 + 1 =10, 2 + 9 = 11
棋谜式益智健脑趣味数学展示版
IQ MATH CHESS PUZZLES SAMPLE WORKSHEETS
HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
FRANK HO, AMANDA HO 2013, ALL RIGHTS RESERVED.
STUDENT NAME: _______________________ ASSIGNMENT DATE: ________________
20
192. Frankho Abacus Math™
19-9 = 10, 24 – 7 = 17
24-1= 23, 16 – 3 = 13
16-2= 14, 21 – 6 = 15
13-8 = 5, 18 – 4 = 14
12 – 6 = 6, 16 – 4 = 12
195. + – × ÷ IQ Math and chess Word Problems
1-5, 2-4, 3-6
42 – 4 = 38, 38 /2 = 19, 19 + 4 = 23
13 x 3 = 39, 39 –13 /(3-2) = 6 tricycles, 13 – 6 = 7 bicycles
33-13=20
20/2=10 … Andy
10 + 13 = 23 …..Kevin
5 minutes
196. Fraction maze
= 65
800 / 4 = 200, 200 /25 = 8 quarters
Do subtraction and then cancellation of denominator of the current fraction with the numerator of the next fraction.
12.5 100
2x x
x
1
50
棋谜式益智健脑趣味数学展示版
IQ MATH CHESS PUZZLES SAMPLE WORKSHEETS
HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
FRANK HO, AMANDA HO 2013, ALL RIGHTS RESERVED.
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197. Geometry
60, 663%, 266%, 256 – 64 ,
Both A and B are 16 – 4 assuming the side length of the square is 16.
50 cm2
198. Geometry
25 + 20 = 45, 18 units2 6x6/2=18, 100 – 36 + 8 -= 72, 72 units
2, 2 circle – square = 4 leaves. Square – 4 leaves = 6.9
cm2
200. Chess and math
3
White bishop and 2 Black rooks intersect at 3 squares so the value is 3
9 – 8 = 1, 1 + 1 = 2
11- 6=5, 5 + 5= 10
14- 9 = 5, 5 + 5 =10
202. Frankho Rook Path Puzzle
203. Frankho Chess Mazes and Castle Math
棋谜式益智健脑趣味数学展示版
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HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
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205. Amandaho Moving Dots Puzzle ™
Move up 1, move down 1. 2 in the middle.
206. Unequal Sudoku
321 132 213
207. Maze
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208. Match stick
1 + 1 + 1 = 1, 5 -2 =3, 4 + 7 = 11
7=11 - 4, 12 – 9 = 3, 3 + 3 = 8
209. Lollipop stick figure
210. Number puzzles
6239 + 6239=12478
10 2=5, 10 + 4 – 2 – 5 = 7
211. Triple mates
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212. Frankho Rook Path Puzzle
Apple =
Strawberry = –
= 33
Banana + pineapple = 120 – 33 – 32 = 55
Pineapple =
= 36
banana = 55 – 36 = 19
213. Frankho Chess Mazes
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214. Multi-grade math
Fraction of multiplication and division [Do not have the same measuring unit (denominator).]
=24 2
=
=______ ______ =8
= 4
2
=1
=______ ______ = 2
Fraction of addition and subtraction [Must have the same measuring unit (denominator).]
=24 2
= 26
=______ ______ = 6
=
= 2
=______ ______ =3
Decimal
=______ ______ = 10 =______ ______ = 2
=______ ______ = 24 =______ ______ = 0.0000024
Whole number
=______ ______ = 3 =______ ______ = 6
=______ ______ = 540 =______ ______ = 1080
%
=______ ______ = 25 =______ ______ = 33
=______ ______ = 0.001 =______ _____ = 0.000005
215. Amandaho Moving Dots Puzzle ™
Move up 3, move down 2. 5 in the middle.
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216. Unequal Sudoku
2341, 3412, 4123, 1234
218. Maze
Maze
219. Matchstick
12 = 18 - 6
7 + 4 – 11 = 0
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220. Matchstick figure
17= (19+16+26)/3
221. Chess puzzle
11
222. Stickman
Head sum = numbers of legs and hands
223. Triple mates
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224. Frankho Rook Path Puzzle
The question ? is the sum of digits of each 2-digit number arranged to its value.
3 9 9 10 = 2+1, 2+7, 5+4, 5+5
3 7 7 10 = 1+2, 4+3, 2+8, 6+4
225. Frankho Chess Mazes
227. Amandho Moving Dots Puzzle ™
Move up 1, move down 2. 3 in the middle.
228. Unequal Sudoku
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229. Loop-the-Loop
232. Math, Chess, and Puzzles
87, 10 6 2, 5 4 9
9+11=20, 8+15=23, 8+9=17, 9+9=18, 6+18=24, 8+12=20, 9+13=22, 9+9=18
233. Replace each letter by a number.
12332435; 8232124; A=4, B=6; 15315745; 1206516; A=1, B=9; A=9, B=7; A=9, B=7; A=11, B=6; 20040200; 5330; 1600,
3600
234. Square math
231
123
312
132
321
213
312
123
231
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235. One loop
236. Unequal Sudoku
132 213 321
312 231 123
132 213 321
237. Sudoku 数独
3142
4213
1324
2431
3124
2413
4231
1342
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HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
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238. Sudoku 数独
239.
13-11=2, 7+6=13,, 14-9=5, 11+3=14
13-5=8, 5+8=13, 14-12=2, 9+5=14
13-4=9, 9+4=13, 14-6=8, 12+2=14
13-9=4, 8+5=13, 14-11=3, 8+6=14
13-12=1, 11+2=13, 14-7=7, 13+1=14
13-6=7, 6+7=13, 14-8=6, 5+9=14
13-7=6, 4+9=13, 14-13=1, 7+7=14
246. Unequal Sudoku
2314, 1423, 3142, 4231
247. Loop-the-Loop
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248. Maze
249. Math and Chess Contest
f7 - f8 and promote to a knight 22, 23, 19, 42, 23
h2 g3 33, 14, , 3, 22, 17
Rh1 – h5 14, 9, 3, 6, 1
Rd1 – e1 9, 13, 8, 7, 8
Rd1 Nd5 (Nf6 is pinned.) 1, 0, 2 Rd4 – d8 5, –9
Nc3, Ng5, Nd2
5 1
N(ine)
3, 9
Qd2 x Qd4
Nh7 x Nf6
7, 14
121, 441
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棋谜式益智健脑趣味数学展示版
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HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
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棋谜式益智健脑趣味数学展示版
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HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
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棋谜式益智健脑趣味数学展示版
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HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
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棋谜式益智健脑趣味数学展示版
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HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
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棋谜式益智健脑趣味数学展示版
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HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
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HO MATH CHESS™ 何数棋谜™ WWW.MATHANDCHESS.COM
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No calculator, show all your work on empty space
1 Adam has 10 apples and he has 3 apples less than Bob.
How many apples does Bob have?
10+3=13
Adam has 21 apples and he has 5 more apples than Bob.
How many apples does Bob have?
21-5=16
2 Fill in each empty figure with a number.
201
15
216-201=15
Fill in each empty figure with a number.
227
15
227-212=15
3 Adam has 305 apples and after he gives Bob 30 then Bob
has the same number of apples as Adam. How many
apples does Bob have originally?
305-60=245
Adam has 417 apples and after he gave 39 apples to Bob
then Bob has 210 more apples than Adam. How many
apples does Bob have originally?
Method 1, Use "equal" idea which is 417 – 39 39. The
difference is 2 times 39.
Bob’s original apples = 417 – 39 39 +210 = 549
Method 2, use algebra'
B+39- (417-39) = 210
Method3, use Line Segment Diagram.
417 2 39+210=Bob =549
4 Adam has 3 times as many apples as Bob. Adam has
3072 apples. How many apples does Bob have?
1024
Adam has 3 times as many apples as Bob and 15 extra.
Adam has 537 apples. How many apples does Bob have?
537-15 = 522
522
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5 There are some apples in a basket and 0.2 of them are
Adam’s apples and the rest is Bob’s. Adam has 1234
apples, how many does Bob have?
Method 1\
1234 Method 2
Bob has 0.8 which is 4 times of Adam’s. 1244
4936
Three out of 10 students went out for lunch in Alex’s
class and the rest 21 students stayed in class. How many
people went out for lunch?
9
6 Adam sold
of his apples on day 1; on day two, he sold
of the remaining and he had 21apples left, How many
apples did he have originally?
21
=189
Adam sold
of his apples on day 1; on day two, he sold
of the remaining; On day three he sold
of the remaining
and he had 21apples left, How many apples did he have
originally?
=189
7 20% of Jocelyn’s first math test is 68 and 35% of her
second test is 58.5. What is her average of these two
tests?
The sell price of a watch went up 10 % on first week; on
the second week, it dropped 15% and then Jocelyn bought
the watch for $55. What was the original price before the
price went up?
8 Sarah’s mother is three times as old as Sarah. In 35 years,
Sarah’s age will be 11 more than her mother’s age now.
How old is Sarah and her mother individually?
Sarah = 12
Sarah’s mom = 36
Seven years ago, Sarah was 11 years younger than two
times of Sarah’s age now. How old is Sarah now?
15