谁有四年级(人教版)计算题50道,
2个回答

1-2+3-4+5-6+.+2005-2006+2007

=(1-2)+(3-4)+(5-6)+.+(2005-2006)+2007

=-1-1-1-1-1……-1+2007

=-(2006/2)+2007

=1004

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+42 420+580-64×21÷28

37.812-700÷(9+31×11) (136+64)×(65-345÷23)

38.85+14×(14+208÷26)

39.(284+16)×(512-8208÷18)

40.120-36×4÷18+35

41.(58+37)÷(64-9×5)

42.(6.8-6.8×0.55)÷8.5

43.0.12× 4.8÷0.12×4.8

44.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6

45.6-1.6÷4= 5.38+7.85-5.37=

46.7.2÷0.8-1.2×5= 6-1.19×3-0.43=

47.6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9

48.10.15-10.75×0.4-5.7

49.5.8×(3.87-0.13)+4.2×3.74

50.32.52-(6+9.728÷3.2)×2.5

51.(375+1034)+(966+125)

52.(2130+783+270)+1017

53.99+999+9999+99999

54.7755-(2187+755)

55.2214+638+286

56.3065-738-1065

57.899+344

58.2357-183-317-357

59.2365-1086-214

60.497-299

61.2370+1995

62.3999+498

63.1883-398

64.12×25

65.75×24

66.138×25×4

67.(13×125)×(3×8)

68.(12+24+80)×50

69.704×25

70.25×32×125

71.32×(25+125)

72.88×125

73.102×76

74.58×98

75.178×101-178

76.84×36+64×84

77.75×99+2×75

78.83×102-83×2

79.98×199

80.123×18-123×3+85×123

81.50×(34×4)×3

82.25×(24+16)

83.178×99+178

84.79×42+79+79×57

85.7300÷25÷4

86.8100÷4÷75

87.16800÷120

88.30100÷2100

89.32000÷400

90.49700÷700

91.1248÷24

92.3150÷15

93.4800÷25

94.21500÷125

95.123×43-43×23

96.175-75÷25

97.4800÷75+36

98.47.83-(6.83+13.5)

99.(947-599)+76×64