№42. Найди значения выражений.

Решение:

1. \( 30 : 6 + 15 = 5 + 15 = 20 \)


2. \( 17 + 36 : 4 = 17 + 9 = 26 \)


3. \( 33 - 60 : 6 = 33 - 10 = 23 \)


4. \( 8 \times 5 - 15 = 40 - 15 = 25 \)


5. \( 18 : 2 + 18 : 3 = 9 + 6 = 15 \)


6. \( 36 : 9 \times 5 = 4 \times 5 = 20 \)


7. \( 36 : 6 - 18 : 9 = 6 - 2 = 4 \)


8. \( 35 : 5 \times 9 = 7 \times 9 = 63 \)


9. \( 30 : 3 - 9 = 10 - 9 = 1 \)

Ответ: 20, 26, 23, 25, 15, 20, 4, 63, 1.