优质解答
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 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. 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)= (49)5.8×(3.87-0.13)+4.2×3.74 (50)32.52-(6+9.728÷3.2)×2.5 (51)[(7.1-5.6)×0.9-1.15] ÷2.5 (52)5.4÷[2.6×(3.7-2.9)+0.62] (53)12×6÷(12-7.2)-6 (54)12×6÷7.2-6 (55)0.68×1.9+0.32×1.9 (56)(58+370)÷(64-45) (57)420+580-64×21÷28 (58)(136+64)×(65-345÷23) (59)48.10.15-10.75×0.4-5.7 (60)0.92.5/58.2 (61)25.2×36.2/32×3.2 (63)2.2222×2.5×8.2 (64)99.9×99.9×99.9 (65)99*99.9×88.8×77.7×66.65 (66)123.3×145.9×45.3 (67)258.3×258.3×56 (68)79456.2×88×96/89 (69)123456×963.3/98×36 (70)225×996.3/89.2 (71)789×0.2/0.258 (72)9.8×2+0.4 (73)59.6/2+59.6 (74)0.3×5+0.7×5 (75)0.3+0.7-0.5 (76)9×2+11×2 (77)9.84/2+9.84 (78)6/7+2/15+1/7+ 13/15 19/21+5/7-3/14 (79)5/9-2/3+5/9 (80)8/9-(1/4-1/9)- 3/4 (81)3/7 × 49/9 - 4/3 (82)8/9 × 15/36 + 1/27 (83)12× 5/6 – 2/9 ×3 (84)8× 5/4 + 1/4 (85)6÷ 3/8 – 3/8 ÷6 (86)4/7 × 5/9 + 3/7 × 5/9 (87)5/2 -( 3/2 + 4/5 ) (88)7/8 + ( 1/8 + 1/9 ) (89)9 × 5/6 + 5/6 (90)3/4 × 8/9 - 1/3 (91)7 × 5/49 + 3/14 (92)6 ×( 1/2 + 2/3 ) (93)8 × 4/5 + 8 × 11/5 (94)31 × 5/6 – 5/6 (95)9/7 - ( 2/7 – 10/21 ) (96)5/9 × 18 – 14 × 2/7 (97)4/5 × 25/16 + 2/3 × 3/4 (98)14 × 8/7 – 5/6 × 12/15 (99)17/32 – 3/4 × 9/24 (100)3 × 2/9 + 1/3
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 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. 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)= (49)5.8×(3.87-0.13)+4.2×3.74 (50)32.52-(6+9.728÷3.2)×2.5 (51)[(7.1-5.6)×0.9-1.15] ÷2.5 (52)5.4÷[2.6×(3.7-2.9)+0.62] (53)12×6÷(12-7.2)-6 (54)12×6÷7.2-6 (55)0.68×1.9+0.32×1.9 (56)(58+370)÷(64-45) (57)420+580-64×21÷28 (58)(136+64)×(65-345÷23) (59)48.10.15-10.75×0.4-5.7 (60)0.92.5/58.2 (61)25.2×36.2/32×3.2 (63)2.2222×2.5×8.2 (64)99.9×99.9×99.9 (65)99*99.9×88.8×77.7×66.65 (66)123.3×145.9×45.3 (67)258.3×258.3×56 (68)79456.2×88×96/89 (69)123456×963.3/98×36 (70)225×996.3/89.2 (71)789×0.2/0.258 (72)9.8×2+0.4 (73)59.6/2+59.6 (74)0.3×5+0.7×5 (75)0.3+0.7-0.5 (76)9×2+11×2 (77)9.84/2+9.84 (78)6/7+2/15+1/7+ 13/15 19/21+5/7-3/14 (79)5/9-2/3+5/9 (80)8/9-(1/4-1/9)- 3/4 (81)3/7 × 49/9 - 4/3 (82)8/9 × 15/36 + 1/27 (83)12× 5/6 – 2/9 ×3 (84)8× 5/4 + 1/4 (85)6÷ 3/8 – 3/8 ÷6 (86)4/7 × 5/9 + 3/7 × 5/9 (87)5/2 -( 3/2 + 4/5 ) (88)7/8 + ( 1/8 + 1/9 ) (89)9 × 5/6 + 5/6 (90)3/4 × 8/9 - 1/3 (91)7 × 5/49 + 3/14 (92)6 ×( 1/2 + 2/3 ) (93)8 × 4/5 + 8 × 11/5 (94)31 × 5/6 – 5/6 (95)9/7 - ( 2/7 – 10/21 ) (96)5/9 × 18 – 14 × 2/7 (97)4/5 × 25/16 + 2/3 × 3/4 (98)14 × 8/7 – 5/6 × 12/15 (99)17/32 – 3/4 × 9/24 (100)3 × 2/9 + 1/3