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Math Tutor's Solution: 21.075 as a fraction is 843/40
Methods
Converting 21.075 to a fraction, Step-by-Step from a Math Tutor
Step 1:
The first step to converting 21.075 to a fraction is to re-write 21.075 in the form p/q where p and q are both positive integers. To start with, 21.075 can be written as simply 21.075/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 21.075, which in this case is 3. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 21.075/1 each by 10 to the power of that many digits. For instance, for 0.45, there are 2 fractional digits so we would multiply by 100; or for 0.324, since there are 3 fractional digits, we would multiply by 1000. So, in this case, we will multiply the numerator and denominator of 21.075/1 each by 1000:
Step 3:
Now the last step is to simplify the fraction (if possible) by finding similar factors and cancelling them out, which leads to the following answer:
Math Tutor Suggests: Try to Convert Other Values to Fractions
Become a pro at converting decimals or percentages to fractions by exploring some examples from our math tutors, like the ones below:
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