有理数经典加减乘除练习题

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1、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

2、 18.3×2/9+1/3 19.17/32–3/4×9/24 20.14×8/7–5/6×12/15 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） 32.347+45×2-4160÷5

3、2 33.178-145÷5×6+42420+580-64×21÷28 34.（58+37）÷（64-9×5） 35.95÷（64-45） 36.0.12×4.8÷0.12×4.8 37.(6.8-6.8×0.55)÷8.5 38.（3.2×1.5+2.5）÷1.639.10.15-10.75×0.4-5.7 40.369/33-(-54-31/15.5) 41.5.8×（3.87-0.13）+4.2×3.74 42.123+456+789+98/(-4) 43.9x8x7/5x(4+6) 44.-3.75+(+5/4)+(-

4、1.5) 45.(-17/4)+(-10/3)+(+13/3)+(11/3) 46.(+1.3)-(+17/7) 47.(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4) 48.

5、(-5/4)-(-3/4)

6、-

7、1-5/4-

8、-3/4

9、)49.(-2/199)×(-7/6-3/2+8/3) 50.

10、(-7.2)-(-6.3)+(1.1)

11、 51.0.125×3.2×2.552.5.4×3.08＋3.6×3.08＋3.0853.〔（6.1－4.6）×0.8－1〕×0.454.〔（6.1－4.6）×0

12、.8－1〕×0.455.1.6×[(12－7.2)÷(0.84÷2.1)]56.(12+23.1÷0.75)×0.4－5.1257.-14.4×3.08＋(-5.4)×3.08＋3.0858.-2/9-7/9-5659.4.6-(-3/4+1.6-4-3/4)60.[2/3-4-1/4×(-0.4)]/1/3+261.1/2-（-3）+5/6+（-7/12）62.(1/4-5/6+1/3+2/3)/1/263.64.65.66.67.68.69.70.71.72.73.74.75.76.77.78.79.80.81.82.83

13、.84.85.86.87.88.89.90.91.92.93.94.95.96.97.98.99.100.101.102.103.104.105.106.107.108.109.110.111.112.113.114.115.116.117.118.119.120.121.122.123.124.125.126.127.128.129.