> 数学 >
0.25×1.8+3.9(简算
人气:465 ℃ 时间:2020-03-23 16:18:03
解答
0.25×1.8+3.9
=0.3*(0.25*6+1.3)
=0.3*(1.5+1.3)
=0.3*2.8
=0.3*(3-0.2)
=0.9-0.06
=0.84
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版