0.73x9.8简便运算?
2个回答
2022-04-30
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0.73×9.8
=0.73×(10-0.2)
=0.73×10-0.73×0.2
=7.3-0.146
=7.154
=0.73×(10-0.2)
=0.73×10-0.73×0.2
=7.3-0.146
=7.154
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