6. Вычисли. a) (21 + 8) \(\cdot\) 2 + 27 = 6) (5 + 13) \(\cdot\) 4 - 22 = в) 48 : 6 + 54 : 9 = г) 72 : 9 + 63 : 9 = д) 69 - 4 \(\cdot\) 13 = e) 18 \(\cdot\) 5 - 26 =

Решение:

a) (21 + 8) \(\cdot\) 2 + 27 =

1. 21 + 8 = 29
2. 29 \(\cdot\) 2 = 58
3. 58 + 27 = 85

б) (5 + 13) \(\cdot\) 4 - 22 =

1. 5 + 13 = 18
2. 18 \(\cdot\) 4 = 72
3. 72 - 22 = 50

в) 48 : 6 + 54 : 9 =

1. 48 : 6 = 8
2. 54 : 9 = 6
3. 8 + 6 = 14

г) 72 : 9 + 63 : 9 =

1. 72 : 9 = 8
2. 63 : 9 = 7
3. 8 + 7 = 15

д) 69 - 4 \(\cdot\) 13 =

1. 4 \(\cdot\) 13 = 52
2. 69 - 52 = 17

е) 18 \(\cdot\) 5 - 26 =

1. 18 \(\cdot\) 5 = 90
2. 90 - 26 = 64

Ответ: а) 85, б) 50, в) 14, г) 15, д) 17, е) 64