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3. Calculează:
a. (18+36): 9 =
c. 64:2=(
=
11
11
+
+:2=
: 2+
+
11
: 2 =
=
b. (64-56): 8=
d. 48:2=(
11
11
=
11
+
:2+
+
:8-
11
=
-
=
11
2=
:2=
:8=


Răspuns :

Răspuns:

a)

(18 + 36) ÷ 9 = (54) ÷ 9 = 6

b)

(64 - 56) ÷ 8 = (8) ÷ 8 = 1

c)

64 ÷ 2 = 32

32 ÷ 2 = 16

16 + 11 = 27

d)

48 ÷ 2 = 24

24 ÷ 8 = 3