> 其他 >
0.63*27+1.9*(4.3-2.2)的简便算法
人气:194 ℃ 时间:2019-12-11 03:14:53
解答
0.63*27+1.9*(4.3-2.2)
=0.63*27+1.9*2.1
=2.1*8.1+1.9*2.1
=2.1*(8.1+1.9)
=2.1*10
=21
推荐
猜你喜欢
© 2025 79432.Com All Rights Reserved.
电脑版|手机版