括号2.75+27.5×0.9括号÷0.5简便算法
发布网友
发布时间:2024-10-23 21:13
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热心网友
时间:2024-11-03 22:31
(2.75+27.5×0.9)÷0.5
=(2.75+2.75×9)×2
=2.75×(1+9)×2
=2.75×10×2
=27.5×2
=55
热心网友
时间:2024-11-03 22:33
解:
(2.75+27.5×0.9)÷0.5
=(27.5×0.1+27.5×0.9)÷(1/2)
=27.5×(0.1+0.9)×2
=27.5×1×2
=27.5×2
=55
热心网友
时间:2024-11-03 22:34
2.75x(1+9)÷0.5
=27.5÷0.5
=55
热心网友
时间:2024-11-03 22:33
(2.75+27.5×0.9)÷0.5
=(27.5×0.1+27.5×0.9)÷0.5
=27.5×(0.1+0.9)÷0.5
=27.5×1÷0.5
=27.5÷0.5
=55
热心网友
时间:2024-11-03 22:37
把27.5拆为2.75*10
可得2.75(1+0.9*10)/0.5
=2.75*10/0.5
=2.75*20
=55