脫式計算,能簡算的要簡算5.7×1 +2.5÷4 7.23+14.75-6.87+2.77-8

脫式計算,能簡算的要簡算5.7×1 +2.5÷4 7.23+14.75-6.87+2.77-8


=5.7+14.75+2.77-8-6.87+2.5/47.23
=5.7+2.77+14.75-14.87+0.05
=5.7+2.65+0.05
=8.4



〔15分之8-(5分之4-10分之3)〕×14分之15計算一步一步的


〔15分之8-(5分之4-10分之3)〕×14分之15
=【8/15-(8/10-3/10)】*15/14
=(8/15-5/10)*15/14
=(16/30-15/30)*15/14
=1/30*15/14
=1/28



5/7×[7/8-(1/2+3/8)]簡算


5/7×[7/8-(1/2+3/8)]
=5/7x(7/8-3/8-1/2)
=5/7x(1/2-1/2)
=5/7x0
=0
在右上角點擊【評估】,然後就可以選擇【滿意,問題已經完美解决】了.