9.99×22.2+33.3×3.34有简便方法吗
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 19:24:04
![9.99×22.2+33.3×3.34有简便方法吗](/uploads/image/z/60153-33-3.jpg?t=9.99%C3%9722.2%2B33.3%C3%973.34%E6%9C%89%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E5%90%97)
9.99×22.2+33.3×3.34有简便方法吗
9.99×22.2+33.3×3.34有简便方法吗
9.99×22.2+33.3×3.34有简便方法吗
9.99*22.2+33.3*3.34
=(3.33*3)*22.2+(3.33*10)*3.34
=3.33*(3*22.2)+3.33*(10*3.34)
=3.33*66.6+3.33*33.4
=3.33*(66.6+33.4)
=3.33*100
=333
以上式子里面的星号*是指乘号×