Page 124 - ATA YAYINCILIK 4. Sınıf Gıcır Gıcır Matematik 1. Kitap

Doğal Sayılarla Çarpma İşlemi

12 Aşağıdaki eşitliklerde noktalı yerlere uygun sayıları yazalım.

(15 x 3) x 20 = (15 x .......) x 3 70 x (13 x .......) = (13 x 70) x 6 22 x (14 x 18) = 18 x (14 x .......)

(16 x 17) x ....... = 16 x (17 x 6) (7 x 4) x 5 = 4 x (....... x 7) 12 x (....... x 3) = 5 x (12 x 3)

82 x (31 x 9) = (82 x 9) x ....... 30 x (....... x 11) = (6 x 30) x 11 ....... x (52 x 2) = (52 x 27) x 2

....... x (61 x 5) = (45 x 5) = 61 28 x (20 x 9) = ....... x (20 x 9) 5 x (15 x 25) = ....... x (25 x 5)

(2 x 13) x 16 = (13 x .......) x 2 (43 x 16) x ....... = (10 x 16) x 43 52 x (90 x .......) = 90 x (3 x 52)

20 x (....... x 24) = 24 x (20 x 8) ....... x (30 x 11) = 11 x (30 x 7) 64 x (4 x 30) = 30 x (....... x 4)

13 Aşağıdaki işlemleri tabloyu kullanarak örnekteki gibi yapalım.
YENI NESIL
ETKINLIK

★ ▲ ■ ● (A★ x B▲) x C■ = A▲ x (B★ x C●) =
A 17 23 18 15 (17 x 35) x 39 = .............................................................................

B 24 35 28 33 595 x 39 = .............................................................................
C 36 40 39 34

D 41 22 21 13 23205 = .............................................................................

(A● x C▲) x B● = (B■ x D★) x C★ = D■ x (A▲ x C●) =

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(B● x D▲) x C★ = C▲ x (A■ x B■) = C■ x (B▲ x D●) =
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