（2013•东莞）能简便算的用简便方法计算．[1.375-（0.25+0.375）]÷0.2534×34+14×0.75−0.7526×28×(126×27+127×28)(411+117)×11+617．

Question

（2013•东莞）能简便算的用简便方法计算．
[1.375-（0.25+0.375）]÷0.25                          
(3)/(4)×(3)/(4)+(1)/(4)×0.75−0.75
26×28×((1)/(26×27)+(1)/(27×28))
((4)/(11)+(1)/(17))×11+(6)/(17)．

Answer 1

（1）[1.375-（0.25+0.375）]÷0.25
=[1.375-0.25-0.375]÷0.25
=0.75÷0.25
=5

（2）(3)/(4)×(3)/(4)+(1)/(4)×0.75−0.75
=(3)/(4)×(3)/(4)+(1)/(4)×(3)/(4)−(3)/(4)
=(3)/(4)×（(3)/(4)+(1)/(4)−(3)/(4)）
=(3)/(4)×(1)/(4)
=(3)/(16)

（3）26×28×（(1)/(26×27)+(1)/(27×28)）
=26×28×(1)/(26×27)+26×28×(1)/(27×28)
=(28)/(27)+(26)/(27)
=(54)/(27)
=2

（4）（(4)/(11)+(1)/(17)）×11+(6)/(17)
=(4)/(11)×11+(1)/(17)×11+(6)/(17)
=4+(11)/(17)+(6)/(17)
=4+1
=5