简便计算题, 悬赏100分!!

2.4乘1.8减4.8乘0.4
3.7乘8.7加6.2乘8.7加0.87
4.2乘6.5除以1.3
4.6除以(0.4乘2.3)
3.6除以4.8乘0.8
(6.4加3.2)除以8
3.2乘0.1加6.32乘9
11.26减8.73加2.73
好的加分, 是简便算法,说是用计算计算的滚开
要有过程,不要光有结果

2.4*1.8-4.8*0.4
=2.4*2*1.8/2-4.8*0.4
=4.8*0.6-4.8*0.4
=4.8*(0.6-0.4)
=4.8*0.2
=2.4

3.7*8.7+6.2*8.7+0.87
=3.7*8.7+6.2*8.7+8.7*0.1
=(3.7+6.2+0.1)*8.7
=10*8.7
=87

4.2*6.5/1.3
=4.2*(6.5/1.3)
=4.2*5
=21

4.6/(0.4*2.3)
=4.6/2.3*0.4
=2*0.4
=0.8

3.6/4.8*0.8
=3.6*0.8/4.8
=28.8/4.8
=6

(6.4+3.2)/8
=6.4/8+3.2/8
=0.8+0.4
=1.2

3.2*0.1+6.32*9
=3.2*0.1+6*9+0.32*9
=3.2*(0.1+0.9)+6*9
=57.32

11.26-8.73+2.73
=11.26+2.73-8.73
=14-8.73
=5.27

参考资料:祝:天天学习,天天快乐!

温馨提示:内容为网友见解,仅供参考
第1个回答  2008-12-28
2.4*1.8-4.8*0.4
=2.4*1.8-2.4*2*0.4
=2.4*1.8-2.4*0.8
=2.4*(1.8-0.8)
=2.4*1=2.4

3.7*8.7+6.2*8.7+0.87
=3.7*8.7+6.2*8.7+0.1*8.7
=8.7*(3.7+6.2+0.1)
=8.7*10
=87

4.2*6.5/1.3
=4.2*(6.5/1.3)
=4.2*5
=21

4.6/(0.4*2.3)
=(4.6/2.3)/0.4
=2/0.4
=5

3.6/4.8*0.8
=(0.8/4.8)*3.6
=(1/6)*3.6
=0.6

(6.4+3.2)/8
=6.4/8+3.2/8
=0.8+0.4
=1.2

3.2*0.1+6.32*9
=0.32+6.32*9
=0.32+6-6+6.32*9
=6.32-6+6.32*9
=6.32*1-6+6.32*9
=6.32*(1+9)-6
=6.32*10-6
=63.2-6
=57.2

11.26减8.73加2.73
11.26-8.73+2.73
=11.26-(8.73-2.73)
=11.26-6
=5.26
第2个回答  2008-12-28
1。2.4*1.8-4.8*0.4=2.4*1.8-2*2.4*0.4=2.4(1.8-2*0.4)=2.4*1=2.4

2。3.7*8.7+6.2*8.7+0.87=3.7*8.7+6.2*8.7+8.7*0.1
=8.7*(3.7+6.2+0.1)=8.7*10=87
3。4.2*6.5/1.3=4.2*5*1.3/1.3=4.2*5=21

4。4.6/(0.4*2.3)=(2*2.3)/(0.4*2.3)=2/0.4=5

5..3.6/4.8*0.8=3.6/(6*0.8)*0.8=3.6/6=0.6

6..(6.4+3.2)/8=6.4/8+3.2/8=1.2

7..3.2*0.1+6.32*9=3.2*0.1+(6+0.32)*9
=6*9+3.2*0.1+3.2*0.9=54+3.2*1=57.2

8..26-8.73+2.73=26-8-0.73+2+0.73=10
第3个回答  2008-12-28
2.4*1.8-4.8*0.4
=2.4*1.8-2.4*2*0.4
=2.4*(1.8-0.8)
=2.4
3.7*8.7+6.2*8.7+0.87
=8.7*(3.7+6.2+0.1)
=8.7*10
=87
=4.2*6.5/1.3
=4.2*(6.5/1.3)
=
=4.2*5
=21
4.6/(0.4*2.3)
=(4.6/2.3)/0.4
=2/0.4
=5
3.6/4.8*0.8
=(3.6/1.2)/4*0.8
=0.3*0.8/4
=0.6
(6.4+3.2)/8
=6.4/8+3.2/8
=1.2
3.2*0.1+6.32*9
=0.32*1+(0.32+6)*9
=0.32*(1+9)+6*9
=3.2+54
=57.2
11.26-8.73+2.73
=11.26-(8.73-2.73)
=11.26-6
=5.26
第4个回答  2008-12-28
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) (136+64)×(65-345÷23)
38.85+14×(14+208÷26)
23) 1.2×2.5+0.8×2.5
24) 8.9×1.25-0.9×1.25
25) 12.5×7.4×0.8
26) 9.9×6.4-(2.5+0.24)
(27) 6.5×9.5+6.5×0.5
0.35×1.6+0.35×3.4
6.72-3.28-1.72
0.45+6.37+4.55
5.4+6.9×3-(25-2.5)2×41846-620-380
4.8×46+4.8×54
0.8+0.8×2.5
1.25×3.6×8×2.5-12.5×2.4
28×12.5-12.5×20
23.65-(3.07+3.65)
(4+0.4×0.25)8×7×1.25
1.65×99+1.65
27.85-(7.85+3.4)
48×1.25+50×1.25×0.2×8
7.8×9.9+0.78
(1010+309+4+681+6)×12
3×9146×782×6×854
5.15×7/8+6.1-0.60625

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 (2)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)= 0.68×1.9+0.32×1.9
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
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 (4)12×6÷7.2-6

102×4.5
7.8×6.9+2.2×6.9
5.6×0.25
8×(20-1.25)
1)127+352+73+44 (2)89+276+135+33
(1)25+71+75+29 +88 (2)243+89+111+57
9405-2940÷28×21
920-1680÷40÷7
690+47×52-398
148+3328÷64-75
360×24÷32+730
2100-94+48×54
51+(2304-2042)×23
4215+(4361-716)÷81
(247+18)×27÷25
36-720÷(360÷18)
1080÷(63-54)×80
(528+912)×5-6178
8528÷41×38-904
264+318-8280÷69
(174+209)×26- 9000
814-(278+322)÷15
1406+735×9÷45
3168-7828÷38+504
796-5040÷(630÷7)
285+(3000-372)÷36
1+5/6-19/12
3x(-9)+7x(-9
(-54)x1/6x(-1/3)
1.18.1+(3-0.299÷0.23)×1
2.(6.8-6.8×0.55)÷8.5
3.0.12× 4.8÷0.12×4.8
4.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6
5.6-1.6÷4= 5.38+7.85-5.37=
6.7.2÷0.8-1.2×5= 6-1.19×3-0.43=
7.6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9
8.10.15-10.75×0.4-5.7
9.5.8×(3.87-0.13)+4.2×3.74
10.32.52-(6+9.728÷3.2)×2.5
11.[(7.1-5.6)×0.9-1.15] ÷2.5
12.5.4÷[2.6×(3.7-2.9)+0.62]
13.12×6÷(12-7.2)-6
14.12×6÷7.2-6
15.33.02-(148.4-90.85)÷2.5
7×(5/21+9/714)

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