Question

1 Calculează, respectând regulile învăţate:
(8-6 ) × (9 – 4) =
100 : 10 (6 + 4) =
(7 - 7) 7 + 2 x 2 x 2 =
(18 - 9): 3 + (4 + 5) x 2 =​

Answer 1

Răspuns:

(8-6 ) × (9 – 4) =2·5=10

100 : 10 (6 + 4) =100:10·10=10·10=100

(7 - 7) 7 + 2 x 2 x 2 =1·7+8=15

(18 - 9): 3 + (4 + 5) x 2 =​9:3+9·2=3+18=21