1、小数计算120-36418+35 (58+37)(64-95) (6.8-6.80.55)8.5 0.12 4.80.124.8 (3.21.5+2.5)1.6 3.2(1.5+2.5)1.6 6-1.64= 5.38+7.85-5.37= 7.20.8-1.25= 6-1.193-0.43= 6.5(4.8-1.24)= 0.681.9+0.321.9 10.15-10.750.4-5.7 5.8(3.87-0.13)+4.23.74 32.52-(6+9.7283.2)2.5 6 ( 1/2 + 2/3 ) 8 4/5 + 8 11/5 31 5/6 5/6 9/7 - ( 2/7 10/
2、21 ) 5/9 18 14 2/7 4/5 25/16 + 2/3 3/4 14 8/7 5/6 12/15 17/32 3/4 9/24 3 2/9 + 1/3 5/7 3/25 + 3/7 3/14 2/3 + 1/6 1/5 2/3 + 5/6 9/22 + 1/11 1/2 5/3 11/5 + 4/3 45 2/3 + 1/3 15 7/19 + 12/19 5/6 1/4 + 3/4 2/3 29. 8/7 21/16 + 1/2 30. 101 1/5 1/5 21 31.-|98|+76+(-87)*2356+(-75)-(7)-(8+4+3) 32.5+21*8/2-6-5
3、9 33.68/21-8-11*8+61 34.-2/9-7/9-56 35.4.6-(-3/4+1.6-4-3/4) 36.1/2+3+5/6-7/12 37.2/3-4-1/4*(-0.4)/1/3+2 38.22+(-4)+(-2)+4*3 39.-2*8-8*1/2+8/1/8 40.(2/3+1/2)/(-1/12)*(-12) 41.(-28)/(-6+4)+(-1) 42.2/(-2)+0/7-(-8)*(-2) 43.(1/4-5/6+1/3+2/3)/1/2 44.18-6/(-3)*(-2) 45.(5+3/8*8/30/(-2)-3 46.(-84)/2*(-3)/(-6
4、) 47.1/2*(-4/15)/2/3 48.-3x+2y-5x-7y 49.2/31/21/42/5 50. 26/139/262/3 51.2/91/24/53/8 52.105/91/64 53.1/22/59/109/20 54.5/93/102/72/5 55.1/21/44/51/8 56.3/45/74/31/2 57.238/91/271/27 58.85/62/54 59.1/23/45/124/5 60.8/93/43/83/4 61.5/85/43/239/11 62.3/7 49/9 - 4/3 63.8/9 15/36 + 1/27 64.12 5/6 2/9 3
5、65.8 5/4 + 1/4 66.6 3/8 3/8 6 67.4/7 5/9 + 3/7 5/9 68.5/2 -( 3/2 + 4/5 ) 69.7/8 + ( 1/8 + 1/9 ) 70.9 5/6 + 5/6 74.8 4/5 + 8 11/5 76.9/7 - ( 2/7 10/21 ) 77.5/9 18 14 2/7 78.4/5 25/16 + 2/3 3/4 79.14 8/7 5/6 12/15 80.17/32 3/4 9/24 81.3 2/9 + 1/3 82.5/7 3/25 + 3/7 83.3/14 2/3 + 1/6 84.1/5 2/3 + 5/6 85
6、.9/22 + 1/11 1/2 86.5/3 11/5 + 4/3 87.45 2/3 + 1/3 15 88.7/19 + 12/19 5/6 89.1/4 + 3/4 2/3 90.8/7 21/16 + 1/2 91.101 1/5 1/5 21 92.4.38 (36.94 + 34.30.2) 93.(5.84 - 3.9 ) 0.4 + 0.15 0.92 94.7.6 - 5 (0.3 + 0.9)10 95.1.8(1.4 - 0.26 2) 96.0.27 99 + 0.27 97. 8 0.8 5 + 0.24 9 98. 0.251.25408 99.(0.25 + 2
7、.5 + 25)0.4 100.8.4 + 7.66 + 2.34 +1.6 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/
8、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/
9、5 1/5 21 31.-|98|+76+(-87)*2356+(-75)-(7)-(8+4+3) 32.5+21*8/2-6-59 33.68/21-8-11*8+61 34.-2/9-7/9-56 35.4.6-(-3/4+1.6-4-3/4) 36.1/2+3+5/6-7/12 37.2/3-4-1/4*(-0.4)/1/3+2 38.22+(-4)+(-2)+4*3 39.-2*8-8*1/2+8/1/8 40.(2/3+1/2)/(-1/12)*(-12) 41.(-28)/(-6+4)+(-1) 42.2/(-2)+0/7-(-8)*(-2) 43.(1/4-5/6+1/3+2/3
10、)/1/2 44.18-6/(-3)*(-2) 45.(5+3/8*8/30/(-2)-3 46.(-84)/2*(-3)/(-6) 47.1/2*(-4/15)/2/3 48.-3x+2y-5x-7y 49.2/31/21/42/5 50. 26/139/262/3 51.2/91/24/53/8 52.105/91/64 53.1/22/59/109/20 54.5/93/102/72/5 55.1/21/44/51/8 56.3/45/74/31/2 57.238/91/271/27 58.85/62/54 59.1/23/45/124/5 60.8/93/43/83/4 61.5/85
11、/43/239/11 62.3/7 49/9 - 4/3 63.8/9 15/36 + 1/27 64.12 5/6 2/9 3 65.8 5/4 + 1/4 66.6 3/8 3/8 6 67.4/7 5/9 + 3/7 5/9 68.5/2 -( 3/2 + 4/5 ) 69.7/8 + ( 1/8 + 1/9 ) 70.9 5/6 + 5/6 74.8 4/5 + 8 11/5 76.9/7 - ( 2/7 10/21 ) 77.5/9 18 14 2/7 78.4/5 25/16 + 2/3 3/4 79.14 8/7 5/6 12/15 80.17/32 3/4 9/24 81.3
12、2/9 + 1/3 82.5/7 3/25 + 3/7 83.3/14 2/3 + 1/6 84.1/5 2/3 + 5/6 85.9/22 + 1/11 1/2 86.5/3 11/5 + 4/3 87.45 2/3 + 1/3 15 88.7/19 + 12/19 5/6 89.1/4 + 3/4 2/3 90.8/7 21/16 + 1/2 91.101 1/5 1/5 21 92.4.38 (36.94 + 34.30.2) 93.(5.84 - 3.9 ) 0.4 + 0.15 0.92 94.7.6 - 5 (0.3 + 0.9)10 95.1.8(1.4 - 0.26 2) 96
13、.0.27 99 + 0.27 97. 8 0.8 5 + 0.24 9 98. 0.251.25408 99.(0.25 + 2.5 + 25)0.4 100.8.4 + 7.66 + 2.34 +1.6 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 +
14、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.
15、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.-|98|+76+(-87)*2356+(-75)-(7)-(8+4+3) 32.5+21*8/2-6-59 33.68/21-8-11*8+61 34.-2/9-7/9-56 35.4.6-(-3/4+1.6-4-3/4) 36.1/2+3+5/6-7/12 37.2/3-4-1/4*(-0.4)/1/3+2 38.22+(-4)+(-2)+4*3 39.-2*8-8*1/2+8/1/8 40.(2/3+1/2)/(-1/12)*(-12)
16、 41.(-28)/(-6+4)+(-1) 42.2/(-2)+0/7-(-8)*(-2) 43.(1/4-5/6+1/3+2/3)/1/2 44.18-6/(-3)*(-2) 45.(5+3/8*8/30/(-2)-3 46.(-84)/2*(-3)/(-6) 47.1/2*(-4/15)/2/3 48.-3x+2y-5x-7y 49.2/31/21/42/5 50. 26/139/262/3 51.2/91/24/53/8 52.105/91/64 53.1/22/59/109/20 54.5/93/102/72/5 55.1/21/44/51/8 56.3/45/74/31/2 57.2
17、38/91/271/27 58.85/62/54 59.1/23/45/124/5 60.8/93/43/83/4 61.5/85/43/239/11 62.3/7 49/9 - 4/3 63.8/9 15/36 + 1/27 64.12 5/6 2/9 3 65.8 5/4 + 1/4 66.6 3/8 3/8 6 67.4/7 5/9 + 3/7 5/9 68.5/2 -( 3/2 + 4/5 ) 69.7/8 + ( 1/8 + 1/9 ) 70.9 5/6 + 5/6 74.8 4/5 + 8 11/5 76.9/7 - ( 2/7 10/21 ) 77.5/9 18 14 2/7 7
18、8.4/5 25/16 + 2/3 3/4 79.14 8/7 5/6 12/15 80.17/32 3/4 9/24 81.3 2/9 + 1/3 82.5/7 3/25 + 3/7 83.3/14 2/3 + 1/6 84.1/5 2/3 + 5/6 85.9/22 + 1/11 1/2 86.5/3 11/5 + 4/3 87.45 2/3 + 1/3 15 88.7/19 + 12/19 5/6 89.1/4 + 3/4 2/3 90.8/7 21/16 + 1/2 91.101 1/5 1/5 21 92.4.38 (36.94 + 34.30.2) 93.(5.84 - 3.9 )
19、 0.4 + 0.15 0.92 94.7.6 - 5 (0.3 + 0.9)10 95.1.8(1.4 - 0.26 2) 96.0.27 99 + 0.27 97. 8 0.8 5 + 0.24 9 98. 0.251.25408 99.(0.25 + 2.5 + 25)0.4 100.8.4 + 7.66 + 2.34 +1.6 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
20、/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/
21、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.-|98|+76+(-87)*2356+(-75)-(7)-(8+4+3) 32.5+21*8/2-6-59 33.68/21-8-11*8+61 34.-2/9-7/9-56 35.4.6-(-3/4+1.6-4-3/4) 36.1/2+3+5/6-7/12 37.2/3-4-1/4*(-0.4)/1/3+2 3
22、8.22+(-4)+(-2)+4*3 39.-2*8-8*1/2+8/1/8 40.(2/3+1/2)/(-1/12)*(-12) 41.(-28)/(-6+4)+(-1) 42.2/(-2)+0/7-(-8)*(-2) 43.(1/4-5/6+1/3+2/3)/1/2 44.18-6/(-3)*(-2) 45.(5+3/8*8/30/(-2)-3 46.(-84)/2*(-3)/(-6) 47.1/2*(-4/15)/2/3 48.-3x+2y-5x-7y 49.2/31/21/42/5 50. 26/139/262/3 51.2/91/24/53/8 52.105/91/64 53.1/2
23、2/59/109/20 54.5/93/102/72/5 55.1/21/44/51/8 56.3/45/74/31/2 57.238/91/271/27 58.85/62/54 59.1/23/45/124/5 60.8/93/43/83/4 61.5/85/43/239/11 62.3/7 49/9 - 4/3 63.8/9 15/36 + 1/27 64.12 5/6 2/9 3 65.8 5/4 + 1/4 66.6 3/8 3/8 6 67.4/7 5/9 + 3/7 5/9 68.5/2 -( 3/2 + 4/5 ) 69.7/8 + ( 1/8 + 1/9 ) 70.9 5/6
24、+ 5/6 74.8 4/5 + 8 11/5 76.9/7 - ( 2/7 10/21 ) 77.5/9 18 14 2/7 78.4/5 25/16 + 2/3 3/4 79.14 8/7 5/6 12/15 80.17/32 3/4 9/24 81.3 2/9 + 1/3 82.5/7 3/25 + 3/7 83.3/14 2/3 + 1/6 84.1/5 2/3 + 5/6 85.9/22 + 1/11 1/2 86.5/3 11/5 + 4/3 87.45 2/3 + 1/3 15 88.7/19 + 12/19 5/6 89.1/4 + 3/4 2/3 90.8/7 21/16 +
25、 1/2 91.101 1/5 1/5 21 92.4.38 (36.94 + 34.30.2) 93.(5.84 - 3.9 ) 0.4 + 0.15 0.92 94.7.6 - 5 (0.3 + 0.9)10 95.1.8(1.4 - 0.26 2) 96.0.27 99 + 0.27 97. 8 0.8 5 + 0.24 9 98. 0.251.25408 99.(0.25 + 2.5 + 25)0.4 100.1. 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/
26、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
27、 + 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.-|98|+76+(-87)*2356+(-75)-(7)-(8+4+3) 32.5+21*8/2-6-59 33.68/21-8-11*8+61 34.-2/9-7/9-56 35.4.6-(-3/4+1.6-4-3/4) 36.1/2+3+5/6-7/12 37.2/3-4-1/4*(-0.4)/1/3+2 38.22+(-4)+(-2)+4*3 39.-
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