3.8×5.46＋7.2×5.46-5.46怎样简 - 知识问答

3.8×5.46＋7.2×5.46-5.46怎样简算?4.6×2.02怎样简算?

6个回答

3.8×5.46＋7.2×5.46-5.46
=5.46×(3.8+7.2-1)
=5.46×10
=54.6；
4.6×2.02
=4.6×（2+0.02）
=9.2+0.092
=9.292

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