> 数学 >
巧算7.2*61.3+73.8*2.8
人气:220 ℃ 时间:2020-01-27 05:56:51
解答
7.2*61.3+73.8*2.8
=7.2*73.8+73.8*2.8-12.5*7.2
=738-12.5*4*1.8
=738-90
=648
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版