> 数学 >
8.9*1.1+15.7*8.9+6.8*1.1怎么用简便算法解答
人气:439 ℃ 时间:2020-02-06 02:31:25
解答
8.9×1.1+15.7×8.9+6.8×1.1
解原式= (8.9+6.8)×1.1+15.7×8.9
= 15.7×1.1+15.7×8.9
= 15.7×(1.1+8.9)
= 15.7×10
=157
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版