2.6×0.39+2.7×0.38+2.8×0.37求和的简便算法
6个回答
(2.7-0.1)×(0.38+0.01)+2.7×0.38+(2.7+0.1)×(0.38-0.01)
=2.7×0.38×3-2×0.1×0.01
=3.076
相关问题
列竖式计算. 0.37×0.4= 1.06×25= 27×0.43= 0.6×0.39= 1.7×0.86= 1.8×2
0.79×2.6+7.9×0.74有什么简便算法
2.75×(7.8-6.4)-0.9简便算法
0.9×26+1.8×37的简便算法
计算下面各题,能用简便算法的用简便算法0.25×1.2+2.8×0.25 0.65×101 67.8-7.8×4.9 3
99×0.2+1×0.2简便算法
用简便算法计算下面各题102×0.35 (8+0.8)×1.25 7.7×1.7+2.3×7.7 2.98×0.25×4
5×0.76×0.4×8×2.5的值是(简便算法)
0.48×7.6+0.24×4.8用简便算法计算
4.32×7.2-43.2×0.72简便算法