1. List the factors of 48.
Find the sum of 34,63 and 27.
Write out the 8 times table up to 25 × 8.

2. Cancel down fractions to make them easier to calculate
27 36 = = 3 4
Cancel down the fractions
Know the divisibility rules.
Find the factors of the numerator and denominator

3. Denominator
Numerator
Factor
Divisible

4. Know the divisibility rules.
If the unit digit sum is 3, 6 or 9, then the number is divisible by 3.
If the unit digit sum is 9, then the number is divisible by 9.
2, 4, 6, 8, 0 in the units column indicate that a number is even. If the number is even, then it is divisible by 2.
If the number has a 5 or 0 in the units column, then it is divisible by 5.
If the last three digits of a number is divisible by 8, the number is divisible by 8.
If a number has 0 in the units column then it is divisible by 10.

5. Factors
Find the factors of the numerator and denominator
24 63
72 90
82 120
48 120
96 104
List the factors of the numerators and the factors of the denominators. Underline the factors that are common to both.

6. Cancelling down
Cancel down the fractions ×
75 90 × 18 35
× 20 44
× 28 36
× 78 80 ×
Cancel down the numbers in the question before calculating the answer.