计算,能简算的要简算45×0.25+14×17+25%×386.62×45+3.38÷145[1.18-1.18×(145-1.7)]÷(16-51950)[10-(413+134×2)]÷216.-数学
题文
计算,能简算的要简算
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答案
(1)45×0.25+
=(45+17+38)×0.25, =100×0.25, =25; (2)6.62×45+3.38÷
=6.62×45+3.38×45, =(6.62+3.38)×45, =10×45, =450; (3)[1.18-1.18×(1
=[1.18-1.18×0.1]÷10
=[1.18-0.118]÷10
=1.062÷10
=
(4)[10-(4
=[10-(4
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