Write the decimal number as a fraction
(over 1)
18.05 = 18.05 / 1
Multiplying by 1 to eliminate 2 decimal places
we multiply top and bottom by 2 10's
Numerator (N)
N = 18.05 × 10 × 10 = 1805
Denominator (D)
D = 1 × 10 × 10 = 100
N / D = 1805 / 100
Simplifying fraction:
= 1805/100
= 361/20
= 18 1/20