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Math Tutor's Solution: 90.121 as a fraction is 90121/1000
Methods
Converting 90.121 to a fraction, Step-by-Step from a Math Tutor
Step 1:
The first step to converting 90.121 to a fraction is to re-write 90.121 in the form p/q where p and q are both positive integers. To start with, 90.121 can be written as simply 90.121/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 90.121, which in this case is 3. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 90.121/1 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 90.121/1 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:
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