1.28x0.36+3.22x0.64简便计算

rissy2022-10-04 11:39:541条回答

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mama222 共回答了23个问题 | 采纳率95.7%
1.28x0.36+3.22x0.64
=0.64x2x0.36+3.22x0.64
=0.64x(0.72+3.22)
=0.64x3.94
=0.64x(4-0.06)
=0.64x4+0.64x0.06
=2.56+0.0384
=2.5984
1年前

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