用简便方法计算下面各题。 1.135+45+65 2.278-131-69 3.25×32×125
用简便方法计算下面各题。1.135+45+652.278-131-693.25×32×1254.960÷32÷305.42×168+42×326.44×25...
用简便方法计算下面各题。
1.135+45+65
2.278-131-69
3.25×32×125
4.960÷32÷30
5.42×168+42×32
6.44×25 展开
1.135+45+65
2.278-131-69
3.25×32×125
4.960÷32÷30
5.42×168+42×32
6.44×25 展开
2个回答
2016-03-22 · 知道合伙人教育行家
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1.135+45+65
135+(45+65)
=135+110
=245
2.278-131-69
=278-(131+69)
=278-200
=78
3.25×32×125
=25*4*8*125
=100*1000
=100000
4.960÷32÷30
=960/(32*3)/10
=960/96/10
=1
5.42×168+42×32
=42*(168+32)
=42*200
=8400
6.44×25
=4*25*11
=100*11
=1100
135+(45+65)
=135+110
=245
2.278-131-69
=278-(131+69)
=278-200
=78
3.25×32×125
=25*4*8*125
=100*1000
=100000
4.960÷32÷30
=960/(32*3)/10
=960/96/10
=1
5.42×168+42×32
=42*(168+32)
=42*200
=8400
6.44×25
=4*25*11
=100*11
=1100
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