> 数学 >
5.4x19.9+0.54怎样用简便计算?
人气:446 ℃ 时间:2020-03-26 12:33:25
解答
5.4x19.9+0.54
=5.4x19.9+5.4x0.1
=5.4x(19.9+0.1)
=5.4X20
=108
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版