Question

1. Efectuează:
a) 326 x 2 + 64:8 =
209 x 3 - 6 x 6 : 6 =
123 x 12 + 64:8:2 =
303 3-124 x2 + 72:9=
b) 9 x 10 - (5 x 10+ 5 x 7) =
36:9 + (3 x8-8x 2) =
(36 - 6x6) x (123 +63: 7) =
(45:5 + 12): 7:3 =​

Answer 1

Răspuns:

a) 660 ; 621 ; 1480 ; 2793

b) 5 ; 12 ; 0 ; 1

Explicație pas cu pas:

a) 326 × 2 + 64 : 8 = 660

652 + 8 = 660

209 × 3 - 6 × 6 : 6 = 621

627 - 36 : 6 = 621

627 - 6 = 621

123 × 12 + 64 : 8 : 2 = 1480

1476 + 8 : 2 = 1480

1476 + 4 = 1480

3033 - 124 × 2 + 72 : 9 = 2793

3033 - 248 + 8 = 2793

2785 + 8 = 2793

b) 9 × 10 - ( 5 × 10 + 5 × 7 ) = 5

90 - ( 50 + 35 ) = 5

90 - 85 = 5

36 : 9 + ( 3 × 8 - 8 × 2 ) = 12

4 + ( 24 - 16 ) = 12

4 + 8 = 12

( 36 - 6 × 6 ) × ( 123 + 63 : 7 ) = 0

( 36 - 36 ) × ( 123 + 9 ) = 0

0 × 132 = 0

( 45 : 5 + 12 ) : 7 : 3 = 1

( 9 + 12 ) : 7 : 3 = 1

21 : 7 : 3 = 1

3 : 3 = 1.