ondalik kesİrler 4-5-6
DESCRIPTION
Ondalık Kesirlerle ilgili eğitim sunusu...TRANSCRIPT
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ONDALIK ONDALIK KES KES İ İ RLER RLER Soma A ÇI Dershanesi
Hazırlayan: Sinan ÖZER
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ONDALIK KESİR • Paydası 10,100,1000 gibi 10’un katları olan (veya bu ş ekle getirilebilen) kesirlere denir.
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• ÖRNEK:
• (4 tane ’luk ) => = 0,4 1 10
4 10
Sıf ır tam onda d ö rt
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= 0,1 Sıfır tam onda bir
= 0,05 Sıfır tam yüzde beş
= 1,011 Bir tam binde on bir
= 2,08 İki tam yüzde sekiz
= 5,007 Beş tam binde yedi
ONDALIK KESİR OKUNUŞU
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Her do ğ al say ı ondal ık kesir bi ç iminde yazılabilir.
• 0 = 0,0 47 = 47,0 • 1 = 1,0 638 = 638,0 • 66 = 66,0 999 = 999,0
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Ondalık kesirlerin sağındaki sıfırların silinmesi veya artırılması kesrin
değerini değiştirmez.
• 2,40 = 2,4 27,50 = 27,5 • 1,200 = 1,2 3,700 = 3,7 • 22,8000 = 22,8 77,900 = 77,9
• 102,030 = 102,03 • 200,0020 = 200,002
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BASAMAK KAVRAMI
BİRLER ONLAR YÜZLER
Tam Kısım Ondalık Kısım
Onda Birler
Yüzde Birler
Binde Birler
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KES KES İ İ RLER RLER İ İ ONDALIK ONDALIK KESRE KESRE Ç Ç EV EV İ İ RME RME
• Kesrin paydası 10,100,1000 … olacak şekilde genişletilir veya sadeleşir.
1 2
= = = 3 3x4 12 0,12
25 25x4 100
= = 1x5 5 0,5 2x5 10
=
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ONDALIK KES ONDALIK KES İ İ RLER RLER İ İ KAR KAR Ş Ş ILA ILA Ş Ş TIRMA TIRMA
• Tam kısmı büyük olan ondalık kesir daha büyüktür.
• 1 , 2 > 0, 999 3, 1 > 1 , 987 • Tam kısımları da eşitse onda birlere bakılır.O da eşitse yüzde birler basamağına bakılır.
• 5, 2 > 5, 1 9, 47 > 9, 098 • 8, 471 > 8, 429 6, 1 23 > 6, 1 2
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ONDALIK KESİRLERDE TOPLAMA
• Virgüller basamaklar alt alta gelecek şekilde yazılır. Doğal sayılarda olduğu gibi toplanır.
• Virgül aynen aşağıya indirilir. • 0, 8 + 0, 31 F
• 1 , 681 + 3, 4 F
1,11
5,081
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• Virgüller basamaklar alt alta gelecek şekilde yazılır. Doğal sayılarda olduğu gibi çıkarılır.
• Virgül aynen aşağıya indirilir. • İşlem yapılırken EKSİLENİN olmayan kesir
basamakları yerine sıfır (0) yazılır. • 0, 9 – 0, 4 = • 1 – 0, 25 = • 4, 2 – 1 , 24 =
ONDALIK KESİRLERDE ÇIKARMA
0, 5 0, 75 2, 96
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www.sinanozer.blogcu.com
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1,06 sayısının okunuşu aşağıdakilerden hangisidir?
• A)Bir tam onda altı • B)Bir tam binde atmış • C)Bir tam yüzde atmış • D)Bir tam yüzde altı
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6,8 – 1,2 + 3,9= • A)1,3 • B)11,9 • C)9,5 • D)4,7
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“ iki tam be iki tam beş ş te d te d ö ö rt rt ” kesrinin bileşik kesre çevrilmiş hali aşağıdakilerden hangisidir?
• A)Beş b ö l ü on d ö rt • B)On üç b ö l ü d ö rt • C)On üç te d ö rt • D)On d ö rt b ö l ü beş
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•1) 300 say ı s ı n ı n 5/6 s ı ka ç t ı r?
•A)200 •B)250 •C)360 •D)300
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2)200 yumurtan ı n 2/ 5 i ka ç yumurtad ır?
• A)500 • B)100 • C)200 • D)80
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3)1 y ıl ın 3/5 i kaç g ü nd ü r?
•A)591 •B)5475 •C)219 •D)53
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4)Bir kamyondaki 840 kasa portakal ın 13/21 i sat ıld ı.Sat ılan kasa say ıs ı kaç t ır? • A)520 • B)250 • C)500 • D)275
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5)Küçük Hüsamettin 2400 YTL’sinin 3/8 ini harcadı.Geriye kaç YTL si kaldı? •A)90 •B)900 •C)6400 •D)1500
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1)1 saatin ¾ ü kaç dakikad ır?
•A)80 •B)40 •C)45 •D)30
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2)Bir depodaki 5400 litre suyun 23/27’ si
harcand ı.Harcanan su kaç litredir?
• A)6400 • B)4600 • C)5000 • D)460
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3) 2/7 X 5/3 = ? •A)7/3 •B)21/10 •C)7/10 •D)10/21
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4) 11 X 6/5 = ? •A)17/5 •B)61/5 •C)66/5 •D)5/66
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5)Annem aldığı pirincin önce 2/5’ini sonra 3/5’ini
harcadı.Annem pirincin kaçta kaçını harcadı?
•A)5/10 •B)1/10 •C)5/5 •D)1/5
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6)Hangi say ı y ı 3’ e b ö ler 2 eklersek 11 olur?
• A)16
• B)36
• C)21
• D)27
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7)Yarısı 47 olan sayıya 3 eklersek ka ç olur?
•A)94 •B)50 •C)97 •D)141
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8)Günde 1 7 sayfa kitap okuyan bir öğrenci 340 sayfalık kitabı
kaç günde okur?
•A)5780 •B)20 •C)200 •D)30
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9)Hangi say ı n ı n 5 kat ı 775 eder?
• A)800 • B)155 • C)770 • D)175
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1 0)İki basamaklı en büyük doğal sayının kaç katını alırsam 990
eder?
• A)11 • B)99 • C)110 • D)10
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11) 135 : 2 = 27
•A)5 •B)15 •C)25 •D)35
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