www.gsyw.net > 3.79+2.4×0.21的简便方法

3.79+2.4×0.21的简便方法

3.79+0.21*2.5=3.79+0.21*1+0.21*1.5=3.79+0.21+0.2*1.5+0.01*1.5=4+0.3+0.015=4.315

1.83+3.79+0.17=(1.83+0.17)+3.79=2+3.79=5.79 就是这样啊,很简单的

你好!3.79*1.25+6.21/0.8=3.79*1.25*8/8+62.1/8=3.79*10/8+62.1/缉发光菏叱孤癸酞含喀8=37.9/8+62.1/8=(37.9+62.1)/8=100/8=12.5仅代表个人观点,不喜勿喷,谢谢.

0.21 3.21-10.2 3.79简便运算0.21 3.21-10.2 3.79=(0.21+3.79)+3.21-10.2=4-6.99=-2.99

=3.79*1.25+6.21*1.25=1.25(3.79+6.21)=12.5

1、1.3-3.79+9.7-6.21=(1.3+9.7)-(3.79+6.21)=11-10=1 2、4.38-1.56+0.62-0.44 =(4.38+0.62)(1.56+0.44)=5-2=33、11.72-7.85-(1.26+0.46)=11.72-1.72-7.85=10-7.85=2.15

根据乘法分配律,原式=3.4*(2.79+0.21)=10.2

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

8.79-(3.79+0.22x4)=8.79-3.79-0.22*4=5-0.88=4.12望采纳

15.28-(4.82+ 3.79)=15.28-8.61=6.67没有合适的简便方法

网站地图

All rights reserved Powered by www.gsyw.net

copyright ©right 2010-2021。
www.gsyw.net内容来自网络,如有侵犯请联系客服。zhit325@qq.com