2. 7200:80 =, 160*300 =, 9300:3100 = 290:2 =, 54000:2 =, 90*7000 =

Решение:

1. 7200 : 80 = 90
2. 160 \(\cdot\) 300 = 48000
3. 9300 : 3100 = 3
4. 290 : 2 = 145
5. 54000 : 2 = 27000
6. 90 \(\cdot\) 7000 = 630000

Ответ: 90, 48000, 3, 145, 27000, 630000.