小6數學(數學好勁先好入)

2007-07-13 7:44 pm
1:小明食左一個木瓜的35%,問未食的木瓜佔整個的百分之幾?
2:學校操場擴建後,面積比以前增加23%,問擴建後操場的面積是以前的百分之幾?
3:甲數是丁數的25份之9,問甲數是丁數的百分之幾?

回答 (13)

2007-07-13 7:49 pm
✔ 最佳答案
1. 65%
1-35% = 100%-35% = 65%

2. 123%
1+23% = 100%+23% = 123%

3. 36%
9/25 x 100% = 36%
參考: 都唔使數學好勁都識gei.... 我是老師....
2007-07-17 12:06 am
1.100%-35%~65%
2.1+23%~123%
3.9/25x100%~36%
0.K??????????
參考: me
2007-07-13 8:33 pm
1.65
2.123
3.36
參考: ME! Beacause my maths are EXELLENT!
2007-07-13 8:18 pm
1.)1-35%=65% 原因:100=100%,而末食,是35%以外的,所以只須把全個100%-35%就OK LA!!
2.)1+23%=123% 原因:如上,1=100%,擴建後,是以前100%+新的23%=123%
3.)25份之9 x100%=36% 原因:因為甲數是丁數的25份之9,代表D的東西分開25份,A只有他25份中的9份,你問百份比,所以就X100%。
各位回答者:這是我讀五年級時學的,人家晚學罷了,也不要這樣喔!加油呀!
參考: 自已的頭腦
2007-07-13 7:54 pm
1.100%-35%=65%


2.x+23%


3.36%
參考: me
2007-07-13 7:51 pm
有幾難牙@都吾洗好勁先入得掛-,-好串啵o靚仔=p
1.65
2.123
3.36
2007-07-13 7:50 pm
1. 1 - 35% = 65%
2. 123%/ 100% X 100% = 123%
3. 9/25 = 36%
2007-07-13 7:49 pm
1.100%-35%=65%
2.100%+23%=123%
3.9/25*100%=36%
2007-07-13 7:49 pm
1.
1-35%
=100%-35%
=65%
2.
1+23%
=100%+23%
=123%
3.
(9÷25)×100%
=36%
參考: By CY
2007-07-13 7:47 pm
1. 65
2. 123
3. 36


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