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40 problems of mathematical equations in the fifth grade of primary school mathematics.
1.0. 125×0.8-0. 1

2.8.4÷(0.2×0.5)

3.0.7÷0.7-0.7

4. 1÷0.2- 1×0.2

5.3×0.2×0.5

6.3-2×0.5

7. 10×(4.2+4.2)

8.2.4÷3+6.4÷ 1.6

9.( 1.6- 1.6)÷ 1.6

10.9.9× 1.02

1 1. 143.7-56.3-43.7

12.0.86× 17.6-0,86×8.6+0.86

13. 1.6÷ 1.25

14.0. 15÷0.25×4

15.30. 1÷(6.07+2.53)×0.7

16.4.87-0.74+0. 13-0.26

17. 14.75÷4÷0.25

18.6÷3.9× 1.3

19. 13.78+24.657+6.78

20.0. 125×﹙8+2.4﹚×25

2 1。 2.02×63

22.2.5×﹙44+4.4﹚

23. 17.3 1-2.44+3.56

24. 102.5-2.4× 12.5

25. 132÷2.5

26. 12-5.76÷4.8

27.6.4×﹙ 12.5×0. 125﹚

28.﹙ 100-0.03+9.97﹚×0.0 1

29.7.4÷ 12.5

30.8×﹙ 12.5+2.5﹚×4

3 1.82.84-﹙ 16.45-7. 16﹚- 18.55

32.36×7.2+7.4×72+ 1 10×2.8

33.4.5÷2.5

34.38.4+28.66+7 1.54+ 1 1.6

34.﹙2.5×7.4-2.5×2.4﹚×0.4

35.0. 175÷0.25×4

36.0.57×0.25×400

37.0.36×99

38. 120×4×0.25×0.7

39.4.56-﹙ 1+0.4﹚×3.2

40.6.4×﹙ 125×0. 125﹚