3.72×3.5+6.28×3.5 36.8-3.9-6.1 2 5.48-(9.4-0.52)
4.8×7.8+78×0.52 3.6×102 6.4×0.25+3.6÷4 32+4.9-0.9 4.8-4.8×0.5 (1.25-0.125)×8
4.02+5.4+0.98 5.17-1.8-3.2 13.75-(3.75+6.48)
5.27+2.86-0.66+1.63 13.35-4.68+2.65 47.8-7.45+8.8
0.398+0.36+3.64 15.75+3.59-0.59+14.25 42.5-(6.07+1.13)
0.49÷1.4 1.25×2.5×32 3.6-0.6×2 3.65×10.1 3.6-3.6×0.8 15.2÷0.25÷4
0.89×100.1 146.5-(23+46.5) 17.8÷(1.78×4)
4.36×12.5×8 15.6×13.1-15.6-15.6×2.1 0.65×101
6048+975-3045 498×39 6048+75-3005 648×75-3005
6098+935-1045 404×24-758 1048+975-345 640×75÷35 878×29 68×975-345 9948+275-304 5690×6÷35 68+975-345 68+975÷345 648+75-35 685+975-345 68+975-345 548×975-3045
48×975-304 6748+975-5045 6048+975-30450.425×0,38÷0,01 20.5-1.074-8.35×5.5748+95-45 48×975-30450.425×0,38÷0,01
45×(267+143)(2448+864)÷23
327+9664÷32×25 727+9660÷30×25
586-45×81÷27 58-45×80÷25 3.68÷4.6+6.32 368÷46+632
604×24-758 644×14-858 604×24-758 408×59 478×39 278×39 478×19
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 –简便:
1. 5/2 -( 3/2 + 4/5 )
2. 7/8 + ( 1/8 + 1/9 )
3. 5/6 + ( 1/2 + 2/3 )
4. 9/7 - ( 2/7 - 10/21 )
5. 3/7 + 49/9 + 4/7
6. 8/9 + 15/36 + 3/27
7. 5/2 - ( 3/2 + 4/5 )
1/5 × 21
8. 7/8 + ( 1/8 + 1/9 )
9. 9/7 - ( 2/7 - 10/21 )
10. 1/5 + ( 3/7 + 8/10 )
分数脱式:
1. 1/3 + 3/4 + 1/52. 3/8 + 8/3 - 1/23. 5/6 + 1/12 + 3/4
4. 30/46 - 1/2 + 7/235. 8/11 + 2/6 + 7/336. 19/8 - 1/2 -
3/4
7. 7/25 + 3/10 - 2/58. 18/121 - 1/2 + 9/119. 6/17 - 1/51
- 1/34
10.8/15 + 7/3 - 8/5
408-12×24(46+28)×60 42×50-1715÷5 32+105÷5 (108+47)×52 420×(327-238) (4121+2389)÷7671×15-974 469×12+1492 405×(3213-3189) 5000-56×23 125×(97-81) 6942+480÷3 304×32-154 20+80÷4-20=
100÷(32-30)×0= 25×4-12×5= 70×〔(42-42)÷18〕= 75×65+75×35=
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