问题标题:
12.15减2.37减5.63怎样简便
问题描述:
12.15减2.37减5.63怎样简便
孙淑玲回答:
12.15-2.37-5.63
=12.15-(2.37+5.63)
=12.15-8
=4.15
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12.15减2.37减5.63怎样简便