4.5×5.4+5.5×4.6简便计算怎么算?
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/06 14:10:17
4.5×5.4+5.5×4.6简便计算怎么算?
![4.5×5.4+5.5×4.6简便计算怎么算?](/uploads/image/z/19028094-6-4.jpg?t=4.5%C3%975.4%2B5.5%C3%974.6%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97%E6%80%8E%E4%B9%88%E7%AE%97%3F)
4.5×5.4+5.5×4.6
=4.5×5.4+4.5×4.6+4.6
=4.5×(5.4+4.6)+4.6
=4.5×10+4.6
=45+4.6
=49.6
再问: +4.6是怎么来的??
再答: 5.5×4.6 =4.5×4.6+4.6
=4.5×5.4+4.5×4.6+4.6
=4.5×(5.4+4.6)+4.6
=4.5×10+4.6
=45+4.6
=49.6
再问: +4.6是怎么来的??
再答: 5.5×4.6 =4.5×4.6+4.6