如果1個數 x 含分數ge百分數...點計?
example:
3240000 x (8又3分1)%
跟住約分...
咁條式應該點寫...
(因為如果個百分數係22%,就可寫成 100分之22 , 但而家唔得..)
plz teach me!!
easy數學
2007-12-25 11:19 pm
回答 (4)
2007-12-25 11:25 pm
✔ 最佳答案
3240000 x (25/3) %=3240000 x (25/3) x 1/100
=32400 x 25/3
=270000
關鍵是 n% = n x 1/100
2007-12-25 11:53 pm
22% can write to 0.22
(8又3分1)% can change to 小數or分數
so that
3240000 x (8又3分1)%
=3240000 x8又300分1
=1080x8
=8640
(8又3分1)% can change to 小數or分數
so that
3240000 x (8又3分1)%
=3240000 x8又300分1
=1080x8
=8640
參考: me
2007-12-25 11:37 pm
%可以轉/解釋做 乘1/100
3240000 x (8又3分1)%
=3240000 x 8 1/3x1/100
=3240000 x 25/3 X1/100
=270000
答案：２７００００
3240000 x (8又3分1)%
=3240000 x 8 1/3x1/100
=3240000 x 25/3 X1/100
=270000
答案：２７００００
2007-12-25 11:31 pm
I assume (actually, I'm quite sure) that a calculator is not allowed and you need to show steps.
8又3分1 = 25/3
25/3% = (25/3)/100
= (25/3)*(1/100)
= 25/300
3240000 x 25/300 is the thing you want.
8又3分1 = 25/3
25/3% = (25/3)/100
= (25/3)*(1/100)
= 25/300
3240000 x 25/300 is the thing you want.
收錄日期: 2021-04-16 00:50:53
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071225000051KK01866