3.8×5.46＋7.2×5.46-5.46怎样简算?4.6×2.02怎样简算?_数学解答

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

人气：101 ℃　时间：2020-09-11 08:36:31

解答

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