To convert 0.45 to percent multiply by 100
0.45 × 100 = 45 %
Write the decimal number as a fraction
(over 1)
0.45 = 0.45 / 1
Multiplying by 1 to eliminate 2 decimal places
we multiply top and bottom by 2 10's
Numerator (N)
N = 0.45 × 10 × 10 = 45
Denominator (D)
D = 1 × 10 × 10 = 100
N / D = 45 / 100
Simplifying our fraction
= 45/100
= 9/20
