简便运算:(6.5*0.68*2.28)/(1.3*1.7*0.19)=?

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/28 11:52:34

简便运算:(6.5*0.68*2.28)/(1.3*1.7*0.19)=?
简便运算:(6.5*0.68*2.28)/(1.3*1.7*0.19)=?

简便运算:(6.5*0.68*2.28)/(1.3*1.7*0.19)=?
(1.3*5*1.7*0.4*0.19*12)/(1.3*1.7*0.19)=5*0.4*12=24

=(6.5/1.3)*(0.68/1.7)*(2.28/0.19)
=5*0.4*12
=24

=6.5/1.3*0.68/1.7*2.28/0.19=5*0.4*12=24

(6.5*0.68*2.28)/(1.3*1.7*0.19)
=(6.5*0.17*4*2.28)/(1.3*0.17*1.9)
=(6.5*4*2.28)/(1.3*1.9)
=(1.3*5*4*2.28)/(1.3*1.9)
=(20*1.9*1.2)/1.9
=20*1.2
=24

这。。。
对应就可以全部约掉的啊~6.5/1.3=5.。。。。