Решение:
- 1) 0 \(\cdot\) 220 = 0
- 0 : 370 = 0
- 450 \(\cdot\) 1 = 450
- 530 : 1 = 530
- 2) 350 + 30 \(\cdot\) 4 + 70 = 350 + 120 + 70 = 540
- (630 : 7 + 270) : 4 = (90 + 270) : 4 = 360 : 4 = 90
- (160 \(\cdot\) 2 + 80) : 8 = (320 + 80) : 8 = 400 : 8 = 50
- (480 + 80 \(\cdot\) 3) : 9 = (480 + 240) : 9 = 720 : 9 = 80
Ответ: 0, 0, 450, 530, 540, 90, 50, 80