一.计算,怎样简便怎样算270+35*63.6/0.4-1.3*51.8*（4.2-1.8）÷0.91.25*7.3*0.8（4.3-3.05）*（2.7+0.5）0.8*【（5-0.68）÷1.2】2/3-8/9÷5/6*3/16（1-1/4*8/9）÷7/925÷14+17*1/143/4-8/25+1/4-17/255÷7-1/14÷1/8（5/12-1/19）*12-7/19

一.计算,怎样简便怎样算270+35*63.6/0.4-1.3*51.8*（4.2-1.8）÷0.91.25*7.3*0.8（4.3-3.05）*（2.7+0.5）0.8*【（5-0.68）÷1.2】2/3-8/9÷5/6*3/16（1-1/4*8/9）÷7/925÷14+17*1/143/4-8/25+1/4-17/255÷7-1/14÷1/8（5/12-1/19）*12-7/19
一.计算,怎样简便怎样算
270+35*6
3.6/0.4-1.3*5
1.8*（4.2-1.8）÷0.9
1.25*7.3*0.8
（4.3-3.05）*（2.7+0.5）
0.8*【（5-0.68）÷1.2】
2/3-8/9÷5/6*3/16
（1-1/4*8/9）÷7/9
25÷14+17*1/14
3/4-8/25+1/4-17/25
5÷7-1/14÷1/8
（5/12-1/19）*12-7/19

一.计算,怎样简便怎样算270+35*63.6/0.4-1.3*51.8*（4.2-1.8）÷0.91.25*7.3*0.8（4.3-3.05）*（2.7+0.5）0.8*【（5-0.68）÷1.2】2/3-8/9÷5/6*3/16（1-1/4*8/9）÷7/925÷14+17*1/143/4-8/25+1/4-17/255÷7-1/14÷1/8（5/12-1/19）*12-7/19
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270+35*6
270+210=480
3.6/0.4-1.3*5
9-6.5
3.5
1.8*（4.2-1.8）÷0.9
1.8/0.9*2.4
2*2.4
4.8
1.25*7.3*0.8
1.25*0.8*7.3
1*7.3
7.3
0.8*【（5-0.68）÷1.2】
0.8*[4.32/1.2]
0.8*36
28.8
2/3-8/9÷5/6*3/16
2/3-15/16*3/16
15/7
（1-1/4*8/9）÷7/9
（1-2/9）/7/9
7/9*9/7
1
25÷14+17*1/14
25/14+17/14
3
3/4-8/25+1/4-17/25
1+1
2
5÷7-1/14÷1/8
5/7-8/14
1/7

1.270+35×6
=45×6+35×6
=80×6
=480
2.6÷0.4-1.3×5
=1.3×2×5/2-1.3×5
=0
1.8×（4.2-1.8）÷0.9
=1.8×（4.2-1.8）×10/9
=2×2.4
=4.8
1.25×7.3×0.8
=1.25×0.8×7.3
=1×7.3
=7.3

额 孩纸 我忘了怎么简便做了

1.270+35×6
=45×6+35×6
=80×6
=480
2.6÷0.4-1.3×5
=1.3×2×5/2-1.3×5
=0
1.8×（4.2-1.8）÷0.9
=1.8×（4.2-1.8）×10/9
=2×2.4
=4.8
1.25×7.3×0.8
=1.25×0.8×7.3
=1×...

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1.270+35×6
=45×6+35×6
=80×6
=480
2.6÷0.4-1.3×5
=1.3×2×5/2-1.3×5
=0
1.8×（4.2-1.8）÷0.9
=1.8×（4.2-1.8）×10/9
=2×2.4
=4.8
1.25×7.3×0.8
=1.25×0.8×7.3
=1×7.3
=7.3
0.8*【（5-0.68）÷1.2】
0.8*[4.32/1.2]
0.8*36
28.8
2/3-8/9÷5/6*3/16
2/3-15/16*3/16
15/7
（1-1/4*8/9）÷7/9
（1-2/9）/7/9
7/9*9/7
1
25÷14+17*1/14
25/14+17/14
3
3/4-8/25+1/4-17/25
1+1
2
5÷7-1/14÷1/8
5/7-8/14
1/7
（5/12-1/19）*12-7/19
=5-12\19-7\19
=5-(12+7)\19
=5-1
=4

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