Solution: 18.12 as a fraction is 453/25
Methods
Converting 18.12 to a fraction, Step-by-Step
Step 1:
The first step to converting 18.12 to a fraction is to re-write 18.12 in the form p/q where p and q both are positive integers. To start with, 18.12 can be written as simply 18.12/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 18.12, which in this case is 2. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 18.12/1 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 18.12/1 each by 100:
18.12
×
100
1
×
100
=
1812
100
\frac{18.12 × 100}{1 × 100} = \frac{1812}{100}
1 × 100 18.12 × 100 = 100 1812
Step 3:
Now the last step is to simplify the fraction (if possible) by finding similar factors and cancelling them out:
1812
100
=
453
25
\frac{1812}{100} = \frac{453}{25}
100 1812 = 25 453
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