请问0.56×6.8和3.16×6.5用简算怎么算?
2个回答
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您好解答如下
0.56×6.8
=0.56×7-0.56×0.2
=3.92-0.112
=3.808
3.16×6.5
=3.16×6+3.16×0.5
=18.96+1.58
=20.54
0.56×6.8
=0.56×7-0.56×0.2
=3.92-0.112
=3.808
3.16×6.5
=3.16×6+3.16×0.5
=18.96+1.58
=20.54
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