1.2 Multiples & factors EXPLORING FACTORS TASK 1 1 Numbers from 1 to 20 In the tables below, list the factors of all the numbers from 1 to 20 inclusive. Number Factors Number 1 11 2 12 3 13 4 14 5 15 6 16 7 17 8 18 9 19 10 20 Factors 2 Which number is a factor of every number? _____________________________________ 3 Describe the highest factor of any number. ______________________________________ 4 Which type of number always has a factor of 2? __________________________________ 5 2 × 5 (ie 10) does not have a factor of 4 but 2 × 6 (ie 12) does. Will 2 × 172 (ie 344) have a factor of 4? Explain. ______________________________________________________ _________________________________________________________________________ 6 Challenge: Most numbers have an even number of factors. List some numbers that have an odd number of factors. What type of numbers are these? _______________________________________________________________________________ TASK 2 Let me count the ways In how many different ways can you share 36 apples so that each person receives the same number of whole apples without needing to cut any apples and without having any left over? ___________________________________________________________________________ ___________________________________________________________________________ © 2023 Cambridge University Press Chapter 1 Reviewing number concepts