六年级几道简便计算
32×125×25
=4×8×125×25
=(4×25)×(8×125)
=100×1000
=100000 9048÷26
=(2600+2600+2600+1248)÷26
=2600÷26+2600÷26+2600÷26+1248÷26
=100+100+100+48
=348
2881÷ 43
=(1290+1591)÷ 43
=1290÷43+1591÷43
=30+37 =67 3.2×42.3×3.75-12.5×0.423×16
=3.2×42.3×3.75-1.25×42.3×1.6
=42.3×(3.2×3.75-1.25×1.6)
=42.3×(4×0.8×3.75-1.25×4×0.4)
=42.3×(4×0.4×2×3.75-1.25×4×0.4)
=42.3×(4x0.4x7.5-1.25x4x0.4)
=42.3×[4×0.4×(7.5-1.25)]
=42.3×[4×0.4×6.25]
=42.3×(4×2.5)
=423
1.8+18÷1.5-0.5×0.3
=1.8+12-0.15
=13.8-0.15
=13.65
6.5×8+3.5×8-47
=52+28-47 =80-47 =33 (80-9.8)×5分之2-1.32
=70.2X2/5-1.32
=28.08-1.32
=26.76
8×7分之4÷[1÷(3.2-2.95)]
=8×4/7÷[1÷0.25]
=8×4/7÷4
=8/7
2700×(506-499)÷900
=2700×7÷900
=18900÷900
=21
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
=(3/4-1/4)×6
=1/2×6
=3
56分之53乘57
=53/56×(56+1)
=53/56×56+53/56
=53+53/56
=53又53/56
21分之4乘2分之9-5分之4乘6分之5
=6/7-2/3
=4/21
2.8乘5.6+3.4乘2又5分之4+280%
=2.8×(5.6+3.4+1)
=2.8×10
=28
X÷5分之3=9分之2
X=2/9×3/5
X=2/15
x÷35分之6=45分之26÷25分之13
x÷35分之6=10/9
x=10/9×6/35
x=4/21
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