(768-68×11)÷10怎麼簡便?

(768-68×11)÷10怎麼簡便?


(768-68×11)÷10
=(768-68-680)÷10
=(700-680)÷10
=20÷10
=2



用簡便方法計算.6.5X68十6.5X31十6.5.0.27X0.12十0.88X0.27.


運用乘法分配律簡便計算.
6.5×68+6.5×31+6.5
=6.5×(68+31+1)
=6.5×100
=650
0.27×0.12十0.88×0.27
=.27×(0.12+0.88)
=0.27×1
=0.27.



用簡便方法計算:|1/11一1/12|十|1/12一1/13|十|1/14一1/13|=


|1/11一1/12|十|1/12一1/13|十|1/14一1/13|
=1/11-1/12+1/12-1/13+1/13-1/14
=1/11-1/14
=3/154
如果本題有什麼不明白可以追問,如果滿意請點擊“選為滿意答案”



計算提:一3一4十19一11十2:原式:


=-7+19-11+2=12-11+2=1+2=3,那麼簡單.