In this worksheet, students will consider common factors of pairs of numbers, list factors of numbers, use lists of factors to identify the highest common factors and recognise when to calculate the highest common factor to answer worded problems.

Starting with common factors, in section A, students are asked to identify common factors of numbers such as 12 and 15 from a list of numbers from 1 - 9.

Next, we offer learners a systematic method for finding the HCF of pairs of numbers by asking them first to list the factors of these numbers.

Section C consists of word problems which students will use HCF to answer.