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脱式计算
2089-25×13                 
3.2+45.5+29.6
人气:127 ℃ 时间:2020-04-01 22:17:19
解答
(1)2089-25×13,
=2089-325,
=1764;
(2)3.2+45.5+29.6,
=48.7+29.6,
=78.3.
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