Խնդիրներ, գլուխկոտրուկներ

  1. 86-16=70,70:2=35,35+16=51
  2. 64+8=72,72:2=36
  3. 9510-410+250-680=8670,8670:3=2890, 2890+410=3300 ,2890-250=2640, 2890+680=3570

4.1183-183=1000,1000:2=500 , 500+183=683

5. 100*169+18=16918

6. (40-6):2=17

7. (75-17):2=29

8. ((3+7)*2-8)*10=120

9.(140-20):20=6

10. (65+5)*5=350

11. (100-11)*19+12=1703

12. (10*4-19):7=3

13. (15+12)*5=135

14. 4575:3=1525

15. (41+199):8=30

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