一、计算下列各题
(1)223(3) (2)89(3)
115()555(3)(4)2(3) (4)
231123(2)()6 (5)124232 (6)
114222312 93 (8)2(7)
32218328(4)5 1(1)04(4)(1)(9) (10)
111613111337112(11)431921 (12)436(11)67
(13)1+1/2+1/6+1/12+1/20+·+1/110
(14)101-3+5-7+9-11+·+97-99
二、合并同类项
222222(1)4ab3ab3ba5ab (2)2x7x63x4x
471m3npmpn22(3)4x3y5x6y (4)3
22(5)3x4x73x2x1 (6)
3xy7x2y35xy25x2y32
三、计算题:
(1) (2)
(3)
(4)
四、解方程:
(1)
(2)
(3)
(4)7(2x-1)-3(4x-1)=4(3x+2)-1
(5) (5y+1)+ (1-y)= (9y+1)+ (1-3y)
(6)20%+(1-20%)(320-x)=320×40%
• 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.(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
• 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
• 45.5.38+7.85-5.37=
• 46.7.2÷0.8-1.2×5=
• 47.6.5×(4.8-1.2×4)=
• 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
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