How to Pass Numerical Reasoning (13 page)

Now you can subtract the numerators:

Subtracting mixed fractions

Worked example

Convert the mixed fraction to an improper fraction 1½ =
³
⁄
₂
: Now find the lowest common denominator. The lowest common denominator of 2 and 3 = 2 × 3, so set up the fractions with a common denominator of 6:

Now subtract the numerators:

The fraction cannot be reduced any further.

Subtracting fractions: practice drill

Set a stopwatch and aim to complete the following drill in two minutes.