
6.5 减(1.6除以5减0.12)有简便算法吗
3个回答
展开全部
6.5-(1.6÷5-0.12)
=6.5-(0.4*4÷5-0.12)
=6.5-(0.4*0.8-0.12)
=6.5-(0.32-0.12)
=6.5-0.2
=6.3
=6.5-(0.4*4÷5-0.12)
=6.5-(0.4*0.8-0.12)
=6.5-(0.32-0.12)
=6.5-0.2
=6.3
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