1樓:快樂水晶蛋
1. 3/7 × 49/9 - 4/3
2. 8/9 × 15/36 + 1/273. 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 × 5/97. 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 × 11/514. 31 × 5/6 – 5/6
15. 9/7 - ( 2/7 – 10/21 )16. 5/9 × 18 – 14 × 2/717.
4/5 × 25/16 + 2/3 × 3/418. 14 × 8/7 – 5/6 × 12/1519. 17/32 – 3/4 × 9/2420.
3 × 2/9 + 1/3
21. 5/7 × 3/25 + 3/7
22. 3/14 ×× 2/3 + 1/623. 1/5 × 2/3 + 5/6
24. 9/22 + 1/11 ÷ 1/225. 5/3 × 11/5 + 4/3
26. 45 × 2/3 + 1/3 × 1527. 7/19 + 12/19 × 5/628. 1/4 + 3/4 ÷ 2/3
29. 8/7 × 21/16 + 1/230. 101 × 1/5 – 1/5 × 2131.
50+160÷40 (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+42 420+580-64×21÷28
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)÷8.543.
0.12× 4.8÷0.
12×4.844.(3.
2×1.5+2.5)÷1.
645. 6-1.6÷4= 5.38+7.85-5.3746. 7.2÷0.8-1.2×5
47. 6.5×(4.8-1.2×4)
48. 1 0.15-10.
75×0.4-5.749.
5.8×(3.87-0.
13)+4.2×3.7450.
32.52-(6+9.728÷3.
2)×2.5
2樓:匿名使用者
★1.1035-998 ★2.5076+99★3.
3008+449 ★4.428×25×4★★5.328-189-28 ★★6.
43.2-(3.2-1.
28)★★17.25×2×1.25×4×5×8
★★18.84×0.25+16÷4
二、改錯,下面各題錯在**,請改正。
★★2.5731-(731-525)=5731-731-525=5000-525=4475
答案僅供參考:二、略
六年級上冊數學簡便計算及答案
3樓:楓葉
2.8×4/5+8.2×4/5-4/5
=(2.8+8.2-1)×4/5
=10×4/5
=8你好,本題已解答,如果滿意
請點右下角「採納答案」。
4樓:瀛洲煙雨
0.4×
125×25×0.8
=(0.4×25)×(125×0.8)
=10×100=1000
1.25×(8+10)
=1.25×8+1.25×10
=10+12.5=22.5
9123-(123+8.8)
=9123-123-8.8
=9000-8.8
=8991.2
1.24×8.3+8.3×1.76
=8.3×(1.24+1.76)
=8.3×3=24.9
9999×1001
=9999×(1000+1)
=9999×1000+9999×1
=10008999
14.8×6.3-6.
3×6.5+8.3×3.
7=(14.8-6.5)×6.
3+8.3×3.7=8.
3×6.3+8.3×3.
78.3×(6.3+3.7)
=8.3×10
=831.24+0.78+8.76
=(1.24+8.76)+0.78
=10+0.78
=10.78
933-157-43
=933-(157+43)
=933-200
=733
4821-998
=4821-1000+2
=3823
i32×125×25
=4×8×125×25
=(4×25)×(8×125)
=100×1000
=100000
9048÷268
=(2600+2600+2600+1248)÷26=2600÷26+2600÷26+2600÷26+1248÷269=100+100+100+48
=348
5樓:5皮特
(1)2.64×1.7-2.64×0.7
=2.64×(1.7-0.7)
=2.64×1
=2.64
(2)31.5×1.07-3.15×0.7=3.15×10.7-3.15×0.7
=3.15×(10.7-0.7)
=3.15×10
=31.5
(3)2.7×5.7-2.7+5.3×2.7=2.7×(5.7-1+5.3)
=2.7×10
=27(4)0.625÷0.125×0.8=(0.625×0.8)×8÷(0.128×8)=0.5×8÷1
=4(5)18.6×6.1+3.9×18.6=18.6×(6.1+3.9)
=18.6×10
=186
(6)1.3579+3.5791+5.7913+7.9135+9.1357
=(1+3+5+7+9)×1.1111
=25×1.1111
=27.7775
(7)52.5x2.9+5.45
=5.25x29+5.25+0.2
=5.25×(29+1)+0.2
=5.25×30+0.2
=157.5+0.3
=157.7
(8)0.92x15+0.08x15
=(0.92+0.08)×15
=1×15
=15(9)0.72×1.25×2.5
=0.9×(0.8×1.25)×2.5
=0.9×1×2.5
=2.25
(10)400.6x7-2003x0.4
=200.3x14-200.3x4
=200.3×(14-4)
=200.3×10
=2003
6樓:李洪濤
1.25×32
=1.25 ×8×4
= 10×4=40
7樓:泉赫澹臺依波
34×3.535-3.5×34.34
=34×3.5×1.01-3.5×34×1.01=08+89+899+8999+89999=9+90+900+9000+90000-5=99999-5
=99994
0.67×2.1+0.
018×21+8.5×0.79=0.
67×2.1+0.18×2.
1+8.5×0.79=(0.
67+0.18)×2.1+8.
5×0.79=0.85×2.
1+0.85×7.9
=0.85×(2.1+7.9)
=0.85×10
=8.5
22222.2×9.99999
=22222.2×(10-0.00001)=222222-0.222222
=222221.777778
1997×19961996-1996×19971997=1997×1996×10001-1996×1997×10001=00.02+0.04+0.
06+0.08+……+19.94+19.
96+19.98
=(0.02+19.98)×999÷2
=10×999
=9990
99999×77778+33333×66666=99999×77778+99999×22222=99999×(77778+22222)
=99999×100000
=9999900000
(4又5/6-3又3/4)/(3/14+2/7)=13/12÷1/2
=13/6
=2又1/6
(4.8/1又4/5+3又1/2+7又1/3)*4/9=(2又2/3+7又1/3+3.5)*4/9=(10+3.5)*4/9
=13.5*4/9
=617.2/【(3又2/5-1.25)*2/3】=17.2/【2.15*2/3】
=17.2÷43/3
=1.2
5*5又1/5
=5*5+5*1/5
=25+1
=26(5又2/5-1.8)/[(1.15+13/20)*1又2/3]
=3.6/[1.8*5/3]
=3.6/3
=1.2
3又5/8*5又1/5+5又1/5*6又3/8=5.2*(3又5/8+6又3/8)
=5.2*10
=52[3/4-7/8/(5/6+4/5)]*28=[3/4-7/8÷49/30]*28
=[3/4-15/28]*28
=3/4*28-15/28*28
=21-15
=6(1.25*4/5-0.76)/(1又3/8+1又1/40)=(1-0.76)/2.4
=0.24/2.4
=0.1
[(0.2+1/3)*4.5]/(8又1/20-6.45)=8/15*4.5/1.6
=2.4/1.6
=1.5
x+3又2/3=5
x*9又3/4=7又1/11
x/2/5=10
6又2/3-x=4.25
6.4*1.7+6又2/5*8.3
(4又6/7+1.75)/1又11/14+3又5/62.16-7x=0.06
1/2x-0.5=5又1/2
8.16-1.26/0.3*1.5
=8.16-4.2*1.5
=8.16-6.3
=1.86
8.4*[(1.2+3又1/3)/3.4-1/2]=8.4*[68/16/3.4-1/2]
=8.4*[5/4-1/2]
=8.4*3/4
=6.3
5.8:x=3又1/2:7
3.5x=7*5.8
x=7/3.5*5.8
x=2*5.8
x=11.6
3/10*55-4x=14.5
16.5-4x=14.5
4x=2
x=0.2
19.38-4又7/8-5又1/8
=1.938-(4又7/8+5又1/8)
=19.38-10
=9.38
13又7/13-(6又3/5+3又7/13)=13又7/13-3又7/13-6又3/5=10-6又3/5
=3.4
1又3/4+[2又3/14-(2又3/14-1.875)]/2又1/12
=1又3/4-15/8*12/25
=1又3/4-9/10
=0.85
(9.4-8又2/5)/[(1.1+1/15)*1又7/18]=1/[7/6*25/18]
=1÷175/108
=108/175
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