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简便方法:1.5乘8.4加15乘0.06加15乘10%
人气:431 ℃ 时间:2020-06-04 07:33:21
解答
1.5×8.4+15×0.06+15×10%
=15×0.84+15×0.06+15×0.1
=15×(0.84+0.06+0.1)
=15×0.1
=15
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