把下列百分率化爲最簡分數

問:把下列百分率化爲最簡分數
1.) 25%

2.) 75%

3.) 12.5%

4.) 1.05%

5.) 225%


答ans:1. 25% = 25/100 = 1/4

2.75% = 75/100 = 3/4

3. 12.5% = 125/1000 = 1/8

4.1.05% = 105/10000 = 21/2000

5. 225% = 225/100 = 2又1/4

25%=0.25=1/4
75%=0.75=3/4
12.5=125/1000=1/8
1.05=105/10000=21/2000
225%=225/100=2又1/4
study the 百分數的時候
要記左
1/4=25%=0.25
3/4=75%=0.75
1/2=50%=0.5
1/8=0.125=12.5%
3/8=0.375=37.5%
5/8=0.625=62.5%
7/8=0.875=87.5%

1.) 25% = 25/100 = 1/4

2.) 75% = 75/100 = 3/4

3.) 12.5% = 125/1000 = 1/8

4.) 1.05% = 105/10000 = 21/2000

5.) 225% = 225/100 = 2又1/4

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