簡便運算[8.62-(3.78+2.62)]\0.6

簡便運算[8.62-(3.78+2.62)]\0.6


[8.62-(3.78+2.62)]\0.6
=(8.62-3.78-2.62)\0.6
=(8.62-2.62-3.78)\0.6
=(6-3.78)\0.6
=2.22\0.6
=3.7



6/11×7/8-6/8×6/11簡便計算
(7/10+3/4)×5簡便計算
(21+2/5)×5/7簡便
2/5×15×1/10簡便


1)6/11×7/8-6/8×6/11=6/11(7/8-6/8)=6/11×1/8=3/44
2)(7/10+3/4)×5=7/10×5+3/4×5=7/2+15/4=14/4+15/4=29/4
3)(21+2/5)×5/7=21×5/7+2/5×5/7=15+2/7
4)2/5×15×1/10=30/5x1/10=3/5



125乘64怎樣簡便計算?


125乘64
=125*8*8
=1000*8
=8000



24/0.125(簡便計算)


24/(0.125)
=24×8
=192