> 知识 >
怎么用简便方法计算 3.79×78+5.21×78+78
人气:165 ℃ 时间:2025-04-19 07:48:15
解答

3.79×78+5.21×78+78
=(3.79+5.21+1)×78
=10×78
=780

推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版