53.5×35.5+53.5×43.2+78.5×46.5

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/02 08:43:22
53.5×35.5+53.5×43.2+78.5×46.5

53.5×35.5+53.5×43.2+78.5×46.5
53.5×35.5+53.5×43.2+78.5×46.5

53.5×35.5+53.5×43.2+78.5×46.5
53.5×35.5+53.5×43.2+78.7×46.5
=53.5x(35.5+43.2)+78.7x46.5
=53.5x78.7+78.7x46.5
=(53.5+46.5)x78.7
=100x78.7
=7870
题目有点问题,我把78.5改成了78.7你检查一下题目,看是不是打错

53.5×35.5+53.5×43.2+78.5×46.5
=53.5×(35.5+43.2)+78.5×46.5 (这儿应该是78.7)
=53.5×78.7+78.5×46.5
=(53.5+46.5)×78.7
=100×78.7
=7870

3926334.45