> 数学 >
简便方法：2.71×6.5+0.21×27.1+2.71
人气：296 ℃　时间：2020-03-20 10:08:47
解答
=2.71x6.5+2.1x2.71+2.71x1
=2.71x（6.5+2.1+1）
=2.71x9.6
=26.016
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版