29.6+54.8-33.6简便运算?
3个回答
展开全部
29.6+54.8-33.6
=29.6+54.8-29.6-4
=29.6-29.6+(54.8-4)
=0+50.8
=50.8
=29.6+54.8-29.6-4
=29.6-29.6+(54.8-4)
=0+50.8
=50.8
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展开全部
29.6+54.8-33.6简便运算:
29.6+54.8-33.6
=(29.6-33.6)+54.8
=-4+54.8
=50.8
29.6+54.8-33.6
=(29.6-33.6)+54.8
=-4+54.8
=50.8
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