Step 1:
Let x equal the repeating decimal you are trying to convert to a fraction
Step 2:
Examine the repeating decimal to find the repeating digit(s)
Step 3:
Place the repeating digit(s) to the left of the decimal point
Step 4:
Place the repeating digit(s) to the right of the decimal point
Step 5:
Subtract the left sides of the two equations.Then, subtract the right sides of the two equations
As you subtract, just make sure that the difference is positive for both sides
Now let's practice converting repeating decimals to fractions with two good examples
Example #1:
What rational number or fraction is equal to 0.55555555555
Step 1:
x = 0.5555555555
Step 2:
After examination, the repeating digit is 5
Step 3:
To place the repeating digit ( 5 ) to the left of the decimal point, you need to move the decimal point 1 place to the right
Technically, moving a decimal point one place to the right is done by multiplying the decimal number by 10.
When you multiply one side by a number, you have to multiply the other side by the same number to keep the equation balanced
Thus, 10x = 5.555555555
Step 4:
Place the repeating digit(s) to the right of the decimal point
Look at the equation in step 1 again. In this example, the repeating digit is already to the right, so there is nothing else to do.
x = 0.5555555555
Step 5:
Your two equations are:
10x = 5.555555555
x = 0.5555555555
10x - x = 5.555555555 − 0.555555555555
9x = 5
Divide both sides by 9
x = 5/9
So... .3333 (repeating) is 3/9
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If you only want to change it into a percent, then all you have to do is move the decimal point to the right and put a line over the repeating numbers. Ex. .898989898989898989... is 89.89 % with the last 89 having a line over it
You change three percent to a decimal.
Not hard at all. To change a percent to a decimal, express the percent as a decimal and simply move the decimal to the lefttwo places:45.0% = 0.45
4.0=decimal. 100%=percent
Change the percentage to a decimal by taking the percent and pitting it behind the decimal and to change it to a fraction put the percent under 100