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6.7×0.25+9.3÷4
人气:411 ℃ 时间:2020-05-24 13:18:01
解答
6.7×0.25+9.3÷4
=6.7×0.25+9.3×0.25
=(6.7+9.3)×0.25
=16X0.25
=4X(4X0.25)
=4X1
=4
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