数学题四则混合运算题40道和简易方程20道带答案!
2个回答

1. 3/7 × 49/9 - 4/3

2. 8/9 × 15/36 + 1/27

3. 12× 5/6 – 2/9 ×3

4. 8× 5/4 + 1/4

5. 6÷ 3/8 – 3/8 ÷6

6. 4/7 × 5/9 + 3/7 × 5/9

7. 5/2 -( 3/2 + 4/5 )

8. 7/8 + ( 1/8 + 1/9 )

9. 9 × 5/6 + 5/6

10. 3/4 × 8/9 - 1/3

11. 7 × 5/49 + 3/14

12. 6 ×( 1/2 + 2/3 )

13. 8 × 4/5 + 8 × 11/5

14. 31 × 5/6 – 5/6

15. 9/7 - ( 2/7 – 10/21 )

16. 5/9 × 18 – 14 × 2/7

17. 4/5 × 25/16 + 2/3 × 3/4

18. 14 × 8/7 – 5/6 × 12/15

19. 17/32 – 3/4 × 9/24

20. 3 × 2/9 + 1/3

21. 5/7 × 3/25 + 3/7

22. 3/14 ×× 2/3 + 1/6

23. 1/5 × 2/3 + 5/6

24. 9/22 + 1/11 ÷ 1/2

25. 5/3 × 11/5 + 4/3

26. 45 × 2/3 + 1/3 × 15

27. 7/19 + 12/19 × 5/6

28. 1/4 + 3/4 ÷ 2/3

29. 8/7 × 21/16 + 1/2

30. 101 × 1/5 – 1/5 × 21

31. 50+160÷40 (58+370)÷(64-45)

32. 120-144÷18+35

33. 347+45×2-4160÷52

34.(58+37)÷(64-9×5)

35. 95÷(64-45)

36. 178-145÷5×6+42

37. 812-700÷(9+31×11)

38. 85+14×(14+208÷26)

39.(284+16)×(512-8208÷18)

40. 120-36×4÷18+35

X-2/7X=3/4

70%X + 20%X = 3.6

25% + 10X =4/5

X - 15%X = 68

X+3/8 X=121

5X-3×5/21 =5/11

6X+5 =13.4

X÷(6/35) =(26/45) ×(13/25)

2(x-0.6)=4

(0.5+x)+x=9.8÷2

2(X+X+0.5)=9.8

25000+x=6x

3200=450+5X+X

X-0.8X=6

12x-8x=4.8

7.5*2X=15

1.2x=81.6

x+5.6=9.4

52-x =15

91÷x =1.3