66乘以15加22乘55的运用的是哪种简便运算方法？ 66乘以23十22乘以31的简便方法
更新时间：2021-09-02 21:42:47 • 作者：VICKY •阅读 2163
66乘以45加22乘以65简便方法计算四年级下册
66×45+22×65
=22×135+22×65
=22×（135+65）
=22×200
=4400
用简便方法计算15.5乘以6.6加22乘以5.35
15.5×6.6+22×5.35
=46.5×2.2+2.2×53.5
=（46.5+53.5）×2.2
=100×2.2
=220
78乘55加55乘22简便运算
19.58*66+22*91.26用简便计算方法有会的吗
66=22×3
19.58×66+22×91.26
=19.58×3×22+22×91.26
=（58.74+91.26）22
=150×22
=3300