735 289 - 90*70 + 127 365 (480 207 - 45 690 - 34 517) : 2 (540: 9 * 500 - 18 289) * 100 (12 003 - 11 998) *70 000 - 347 (80 360 - 79 800) : 8 * 300 320*20 + 275 837 - 39 800 1 380 245 - 570*30 - 3145 420: 7 *8000 - 479 999 - 1 !

1)
1. 90*70=6300
2. 735289-6300=728989
3. 728989+127365=856378

2)
1. 480207-45690=434517
2. 434517-34517=400000
3. 400000:2=200000

3)
1. 540:9=60
2. 60*500=30000
3. 30000-18289=11711
4. 11711*100=1171100

4)
1. 12003-11998=5
2. 5*70000=350000
3. 350000-347=349653

5)
1. 80360-79800=560
2. 560:8=70
3. 70*300=21000

6)
1. 320*20=6400
2. 6400+275837=282237
3. 282837-39800=243037

7)
1. 570*30=17100
2. 1380245-17100=1273145
3. 1273145-3145=1270000

8)
1. 420:7=60
2. 60*8000=480000
3. 480000-479000=1
4. 1-1=0