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脱式计算,能简算的要简算5.7×1 +2.5÷4 7.23+14.75-6.87+2.77-8
人气：451 ℃　时间：2020-05-10 00:37:17
解答
=5.7+14.75+2.77-8-6.87+2.5/47.23
=5.7+2.77+14.75-14.87+0.05
=5.7+2.65+0.05
=8.4
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