百分數=>分數

2008-11-13 12:39 am
把下列百分數化成最簡分數/整數:(要計算過程)
1)35%
2)8.4%
3)62.5%
5)200%
6)438%

把下列最簡分數化成百分數:(要計算過程)

.9
-- (10分之9)
10

.7
---(8分之7)
.8

..19
1-- (1又25分19之)
25

.36
2--- ( 2又144分之36)
144

.205
-----( 500分之250)
.500

..120
------( 312分之120)
..312

回答 (5)

2008-11-13 1:31 am
✔ 最佳答案
把下列百分數化成最簡分數/整數:(要計算過程)
1%=1/100

1)35% = 35/100 = 7/20

2)8.4% = 8.4/100 = 84/1000 = 21/250

3)62.5% = 62.5/100 = 625/1000 = 5/8

5)200% = 200/100 = 2

6)438% = 438/100 = 219/50



把下列最簡分數化成百分數:(要計算過程)
100% = 100/100 = 1

10分之9 = 9/10 = 9/10 x 100% = 90%

8分之7 = 7/8 = 7/8 x 100% = 87.5%

1又25分之19 = 44/25 = 44/25 x 100% = 176%

2又144分之36 = 324/144 = 324/144 x 100% = 225%

500分之250 = 250/500 = 250/500 x 100% = 50%

312分之120 = 120/312 = 120/312 x 100% = 38.46% (準備至兩位小數)
參考: 會考數學拿c既人~
2008-11-14 1:05 am
把下列百分數化成最簡分數/整數:(要計算過程)
1)35% =100分之35 =20分之7
2)8.4% =100分之8.4 =25分之2.1
3)62.5% =100分之62.5 =1000分之625 =8分之5
5)200% =2
6)438% =4又100分之38 =4又50分之19

把下列最簡分數化成百分數:(要計算過程)

.9
-- (10分之9)
10

9x10 90
=------- =------ =90%
10x10 100

.7
---(8分之7)
.8
7x12.5 87.5
=--------- =------=87.5%
8x12.5 100

..19
1-- (1又25分19之)
25

19 19x4 76
1--- =1------ =---- =76%
25 25x4 100

.36
2--- ( 2又144分之36)
144

36 2x144+36 324
2---- =----------- =------ = 2.25 =225%
144 144 144


.205
-----( 500分之250)
.500

205 41
------ =----- =41%
500 100


..120
------( 312分之120)
..312

120 120 12000 6
------ =------x100% = ------- %=38------%
312 312 312 13
2008-11-13 7:36 am
把下列百分數化成最簡分數/整數:(要計算過程)

1)35%
= 35/100
= 7/20 (20分之7)
2)8.4%
= 84/1000
=21/250 (250分之21)
3) 62.5%
= 625/1000
= 5/8 (8分之5)
4) 200%
=200/100
=2
5) 438%
=438/100
=4 19/50 (4又50分之19)

把下列最簡分數化成百分數:(要計算過程)

9
--- x 100%
10

=90%

7
--- x 100%
8

=87.5%

19
1---- x 100%
25

=276%

205
------ x 100%
500

=41%

120
------ x 100%
312

6
=38 ---
13

You can ask me ask you have problems!
參考: myself >.
2008-11-13 1:05 am
1)35%
= 35/100
= 7/20 (20分之7)
2)8.4%
= 84/1000
=21/250 (250分之21)
3) 62.5%
= 625/1000
= 5/8 (8分之5)
4) 200%
=200/100
=2
5) 438%
=438/100
=4 19/50 (4又50分之19)


9
--- x 100%
10

=90%

7
--- x 100%
8

=87.5%

19
1---- x 100%
25

=276%

205
------ x 100%
500

=41%

120
------ x 100%
312

6
=38 ---
13
2008-11-13 12:57 am
把下列百分數化成最簡分數/整數:
1)

35% * 100%

=0.35

35
=----
100

7
=---
20

2)

8.4% * 100%

=0.084

84
=----
1000

21
=----
250

3)
62.5% * 100%

=0.625

625
=------
1000

8
=---
5
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