> 数学 >
67×25+33×45-33×20递等式计算,能巧算的要巧算
人气:458 ℃ 时间:2020-05-22 05:48:15
解答
67×25+33×45-33×20
=67×25+33×(45-20)
=67×25+33×25
=25×(67+33)
=25×100
=2500
推荐
猜你喜欢
© 2026 79432.Com All Rights Reserved.
电脑版|手机版