幾道計算題(簡便計算)

問題描述:

幾道計算題(簡便計算)
95/97*63 8又2分之一+6.85+1.6+2又20分之3
(108+45又73分之72)除以9 12又4分之3除以1又5分之一+5.25*六分之五
1個回答 分類:數學 2014-10-10

問題解答:

我來補答
95/97*63
=5985/97
=(61*97+68)/97
=61又97分之68
(8+1/2)+6.85+1.6+(2+3/20)
=8.5+6.85+1.6+2.15
=(8.5+1.6)+(6.85+2.15)
=10.1+9
=19.1
[108+(45+72/73)]/9
=108/9+45/9+(72/73)/9
=12+5+8/73
=17+8/73
=17又73分之8
(12+3/4)/(1+1/5)+5.25*(5/6)
=(12+3/4)/(6/5)+(21/4)*(5/6)
=(12+3/4)*(5/6)+(21/4)*(5/6)
=12*(5/6)+(3/4)*(5/6)+(21/4)*(5/6)
=12*(5/6)+(3/4+21/4)*(5/6)
=12*(5/6)+6*(5/6)
=(12+6)*(5/6)
=18*(5/6)
=15
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