4.2×6.7+6.7×1.2+3.3×5.4简便计算
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/20 11:30:22
![4.2×6.7+6.7×1.2+3.3×5.4简便计算](/uploads/image/z/4308290-26-0.jpg?t=4.2%C3%976.7%2B6.7%C3%971.2%2B3.3%C3%975.4%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97)
4.2×6.7+6.7×1.2+3.3×5.4简便计算
4.2×6.7+6.7×1.2+3.3×5.4简便计算
4.2×6.7+6.7×1.2+3.3×5.4简便计算
4.2×6.7+6.7×1.2+3.3×5.4
=6.7×(4.2+1.2)+3.3×5.4
=6.7×5.4+3.3×5.4
=(6.7+3.3)×5.4
=10×5.4
=54
6.7×(4.2+1.2)+3.3×5.4
=5.4×(6.7+3.3)=54
(4.2+1.2)x6.7+3.3x5.4=5.4x(6.7+3.3)=5.4x10=54
原式=(4.2+1.2)6.7+3.35.4
=(3.3+6.7)5.4=54
有手机就用计算机功能呗,
先算前面的