(0.8×19.85×0.125+0.075×0.125÷0.625)×100-37.5×0.4
来源:学生作业帮 编辑:搜搜考试网作业帮 分类:数学作业 时间:2024/08/19 18:04:33
(0.8×19.85×0.125+0.075×0.125÷0.625)×100-37.5×0.4
![(0.8×19.85×0.125+0.075×0.125÷0.625)×100-37.5×0.4](/uploads/image/z/6885163-19-3.jpg?t=%EF%BC%880.8%C3%9719.85%C3%970.125%2B0.075%C3%970.125%C3%B70.625%EF%BC%89%C3%97100-37.5%C3%970.4)
(0.8×19.85×0.125+0.075×0.125÷0.625)×100-37.5×0.4
=0.8×19.85×0.125×100+0.075×0.125÷0.625×100-37.5×0.4
=8×19.85×1.25+7.5×0.125÷(5/8)-37.5×0.4
=10×19.85+7.5×0.125×1.6-37.5×4×0.1
=198.5+(7.5×4)×(0.125×0.4)-150×0.1
=198.5+30×0.05-15
=198.5+15-15
=198.5
=0.8×19.85×0.125×100+0.075×0.125÷0.625×100-37.5×0.4
=8×19.85×1.25+7.5×0.125÷(5/8)-37.5×0.4
=10×19.85+7.5×0.125×1.6-37.5×4×0.1
=198.5+(7.5×4)×(0.125×0.4)-150×0.1
=198.5+30×0.05-15
=198.5+15-15
=198.5
(0.8×19.85×0.125+0.075×0.125÷0.625)×100-37.5×0.4
(0.8*19.85*0.125+0.075*0.125/0.625)*100-37.5*4用简便方法算
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(0.25-x)/0.125=0.625