17/5*24/9+17/9*24/7简便算法

来源:学生作业帮助网 编辑:作业帮 时间:2024/07/31 10:33:18
17/5*24/9+17/9*24/7简便算法
x1@EkHXfve.zCz-l,l\HV (wO+rFlH?{nSު7'.;Ø{hD#]T ~uimufGSh  9<(1H Ȃ29P,?l؁sN" [uN+@kd\i2$ΰ

17/5*24/9+17/9*24/7简便算法
17/5*24/9+17/9*24/7简便算法

17/5*24/9+17/9*24/7简便算法
17/5*24/9+17/9*24/7
=17/5*24/9+17/7*24/9
=(17/5+17/7)*24/9
=17/12*24/9
=34/9

17/5*24/9+17/9*24/7
=17/9*24/5+17/9*24/7
=17/9*24/(5+7)
=17/9*24*12
=17/9*2/1
=34/9

1 2 3 4 5 6 7 8 9 10 12 13 14 15 161 17 18 19 20 21 22 23 24 25 26 27 28 29 30 =(1 30)×(30÷2) =31×15 =465 ..