Write the decimal number as a fraction
(over 1)
0.64 = 0.64 / 1
Multiplying by 1 to eliminate 2 decimal places
we multiply top and bottom by 2 10's
Numerator = 0.64 × 10 × 10 = 64
Denominator = 1 × 10 × 10 = 100
Numerator/denominator = 64 / 100
Simplifying our fraction
= 64/100
= 16/25