計算:2005×38−0.375×1949+3.75×2.4的值為多少?
2005×38-0.375×1949+3.75×2.4=2005×0.375-0.375×1949+3.75×2.4=2005×0.375-0.375×1949+0.375×24=(2005-1949+24)×0.375=80×0.375=30.
5.375裏有()個8分之1
5.375裏有(43)個8分之1
8分之1=0.125
5.375÷0.125=43
2005×38-0.375×1949+3.75×2.4=2005×0.375-0.375×1949+3.75×2.4=2005×0.375-0.375×1949+0.375×24=(2005-1949+24)×0.375=80×0.375=30.
5.375裏有(43)個8分之1
8分之1=0.125
5.375÷0.125=43