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2017-10-21 · 知道合伙人教育行家
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展开全部
4.2除0.125减4.4除0.25简便计算
=4.2x8-4.2x4
=33.6-16.8
=16.8
=4.2x8-4.2x4
=33.6-16.8
=16.8
展开全部
4.2除0.125减4.4除0.25简便计算
(4.2÷0.125)-4.4÷0.25
=4.2÷1/8-4.4÷1/4
=4.2x8-4.4x4
=4.2x8-2.2x8
=(4.2-2.2)x8
=2x8
=16
(4.2÷0.125)-4.4÷0.25
=4.2÷1/8-4.4÷1/4
=4.2x8-4.4x4
=4.2x8-2.2x8
=(4.2-2.2)x8
=2x8
=16
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