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(425乘5775+4225乘425)÷125÷8

来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/05/17 19:59:27
(425乘5775+4225乘425)÷125÷8
怎么简便算?
(425×5775+4225×425)÷125÷8
=(425×25×231+169×25×425)÷125÷8
=425×25×(231+169)÷125÷8
=425×25×400÷125÷8
=425×25×400÷(125×8)
=425×10000÷1000
=425×10
=4250