Упражнение 8

Упражнение 8

1. \( 20 : 10 \cdot 3 + 50 = 2 \cdot 3 + 50 = 6 + 50 = 56 \)


2. \( 12 : 6 \cdot 8 + 40 = 2 \cdot 8 + 40 = 16 + 40 = 56 \)


3. \( 18 : 6 \cdot 10 + 60 = 3 \cdot 10 + 60 = 30 + 60 = 90 \)


4. \( 21 : 7 \cdot 2 + 30 = 3 \cdot 2 + 30 = 6 + 30 = 36 \)


5. \( 30 : 10 : 3 + 0 = 3 : 3 + 0 = 1 + 0 = 1 \)


6. \( (35 - 29) : 3 = 6 : 3 = 2 \)


7. \( (21 + 3) : 8 = 24 : 8 = 3 \)


8. \( (32 - 30) \cdot 9 = 2 \cdot 9 = 18 \)


9. \( (44 - 41) \cdot 7 = 3 \cdot 7 = 21 \)

Ответ: 1) 56, 2) 56, 3) 90, 4) 36, 5) 1, 6) 2, 7) 3, 8) 18, 9) 21.