Definition / Summary / How To / Steps Cool fact! cent means 100 in french!
Percent to Fraction
1.If there is 2 digits, make the number out of 100
2.If there is 3 digits, make it out of 1000
3.If there is 4 digits, make it out of 10000
So, for every digit over 2 digits, add a zero to the number it is out of.
Converting a fraction to a decimal 1. Make an equivilanent fraction that the denominator is 100, 1000, 10000, etc If the denominator is 100 :
1.Take the numerator and put a decimal point in front of it.
Example: 86/100= .86 If the denominator is 1000 :
1. Take the numerator and put a 0 in front of itâOnly do this if it is a 2 digit numerator
2. Put a deicimal in front of that
Example: 742/1000= .742
Example 2: 64/1000= .064
Converting a fraction to a percent
Way 1:
1. Make an equivilanent fraction that the denominator is 100
2. Take the denominator away and put a percent sign after the numerator
Example: 7/10=70/100=70%
Way 2:
1. Convert the fraction into a decimal
2. Convert the decimal to a percent
Example: 22/50= .44= 44%
Converting a percent to a decimal 1. Take the percent sign away
2. Put a decimal before the numbers
Example: 16%= .16
3. If it already has a decimal in it, take the percent sign away and move the decimal to the front
Example: 54.7%= .547
Converting a decimal to a percent
1. Take the digits of the decimal and put a percent sign after it
Example: .12= 12%
2. If it has more than 2 digits, add a decimal point after the first 2 digits
Example: .1578= 15.78% Easy Problems
Fraction to Percent: 3/50 = ? Answer: 6%
Explanation: Make 3/50 into a porportion with x/100 (3/50=x/100) 50 multiplied by 2 gets you to a hundred, so now you do the same to the 3. (50*2=100/3*2=6) The answer becomes 6/100. Now that the fraction is out of a hundred you just take the numerator (6) and add a percent sign on the right (6%).
Percent to Decimal: 50% = ? Answer: 0.5
Explanation: The percent sign becomes a decimal (50.) Then you move the decimal two places to the left (.50) The added 0 can be deleted (.5)
Medium Problems
Percent to Decimal: 8% = ? Answer: 0.08
Explanation: The percent sign becomes a decimal (8.) Then you move the decimal two places to the left (.08)
Decimal to Percent: .05 = ? Answer: 5%
Explanation: The decimal moves two places to the right (5.) Then you change the decimal to a percent sign. (5%) Hard Problems
Percent to Fraction: 30% = ? Answer: 30/100
Explanation: Since percents are usually already out of 100, you just need to take the number and add the /100. The answer becomes 30/100
Cool fact! cent means 100 in french!
Percent to Fraction
1.If there is 2 digits, make the number out of 100
2.If there is 3 digits, make it out of 1000
3.If there is 4 digits, make it out of 10000
So, for every digit over 2 digits, add a zero to the number it is out of.
Converting a fraction to a decimal
1. Make an equivilanent fraction that the denominator is 100, 1000, 10000, etc
If the denominator is 100 :
1.Take the numerator and put a decimal point in front of it.
Example: 86/100= .86
If the denominator is 1000 :
1. Take the numerator and put a 0 in front of itâOnly do this if it is a 2 digit numerator
2. Put a deicimal in front of that
Example: 742/1000= .742
Example 2: 64/1000= .064
Converting a fraction to a percent
Way 1:
1. Make an equivilanent fraction that the denominator is 100
2. Take the denominator away and put a percent sign after the numerator
Example: 7/10=70/100=70%
Way 2:
1. Convert the fraction into a decimal
2. Convert the decimal to a percent
Example: 22/50= .44= 44%
Converting a percent to a decimal
1. Take the percent sign away
2. Put a decimal before the numbers
Example: 16%= .16
3. If it already has a decimal in it, take the percent sign away and move the decimal to the front
Example: 54.7%= .547
Converting a decimal to a percent
1. Take the digits of the decimal and put a percent sign after it
Example: .12= 12%
2. If it has more than 2 digits, add a decimal point after the first 2 digits
Example: .1578= 15.78%
Easy Problems
Fraction to Percent: 3/50 = ? Answer: 6%
Explanation: Make 3/50 into a porportion with x/100 (3/50=x/100) 50 multiplied by 2 gets you to a hundred, so now you do the same to the 3. (50*2=100/3*2=6) The answer becomes 6/100. Now that the fraction is out of a hundred you just take the numerator (6) and add a percent sign on the right (6%).
Percent to Decimal: 50% = ? Answer: 0.5
Explanation: The percent sign becomes a decimal (50.) Then you move the decimal two places to the left (.50) The added 0 can be deleted (.5)
Medium Problems
Percent to Decimal: 8% = ? Answer: 0.08
Explanation: The percent sign becomes a decimal (8.) Then you move the decimal two places to the left (.08)
Decimal to Percent: .05 = ? Answer: 5%
Explanation: The decimal moves two places to the right (5.) Then you change the decimal to a percent sign. (5%)
Hard Problems
Percent to Fraction: 30% = ? Answer: 30/100
Explanation: Since percents are usually already out of 100, you just need to take the number and add the /100. The answer becomes 30/100
Pictures
converting fraction to decimal [online image] Available www.goodworkbooks.com 1/11/10
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