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4.23×1.08+0.423×9.2用简便方法计算
人气:234 ℃ 时间:2020-04-20 10:07:43
解答
4.23×1.08+0.423×9.2
=0.423×10.8+0.423×9.2
=0.423×(10.8+9.2)
=0.423×20
=8.46
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