Question

Calculeaza, respectand regulile invatate.
A) (7x7+7:7)x7=
(20:2+28)x2=
(18x2+18):6=

B) 196-3x(89-45)=
36x2x(12+47)=
15+60:(39-29)=

Ajutor! Dau coroana.

Answer 1

(49+1)x7=50x7=350
(10+28)x2=38x2=76
(36+18):6=54:6=9
196-3x44=196-132=64
72x59=4248
15+60:10=15+6=21

Answer 2

Răspuns

Explicație pas cu pas:

a)  ( 7 x 7 + 7 : 7 ) x 7 = 350

= ( 49 + 1 ) x 7 =

= 50 x 7 =

= 350

___________________

( 20 : 2 + 28 ) x 2 = 76

= ( 10 + 28 ) x 2 =

= 38 x 2 =

= 76

_____________________

( 18 x 2 + 18 ) : 6 = 9

= ( 36 + 18 ) : 6 =

= 54 : 6

= 9

___________________

b)  196 - 3 x ( 89 - 45 )  = 196

= 196 - 3 x 44=

= 196 - 132 =

= 64

_______________________

36 x 2 x ( 12 + 47 ) = 4 248

= 72 x 59 =

= 4 248

______________________

15 + 60 : ( 39 - 29 ) = 21

= 15 + 60 : 10 =

= 15 + 6 =

= 21