200.6×7.8+200.6×2.2和0.26×5×0.2的简便算法
问题描述:
200.6×7.8+200.6×2.2和0.26×5×0.2的简便算法
答
200.6×7.8+200.6×2.2
=(7.8+2.2)×200.6
=10×200.6
=2006
0.26×5×0.2
=0.26×(5×0.2)
=0.26×1
=0.26