Whole numbers N1/L2.2

Skills, knowledge and understanding		Example
Adults should be taught to:
2 .	carry out calculations with numbers of any size using efficient methods	Use mental and written methods of calculation to generate results when solving problems using whole numbers of any size.
	understand the words multiple and factor and relate them to multiplication and division facts
	understand the word prime and know prime numbers up to 20
	know and use strategies to check answers, e.g. approximate calculations, estimation

Sample activities

Discuss different methods that can be used for mental and written calculations and share short cuts and 'tricks', with explanations, e.g. break down numbers into factors.
Use a number square and cross off multiples of numbers in turn to find prime numbers (sieve of Eratosthenes).
Practise breaking down numbers into prime factors.
Compare the answers to different types of calculation and use this knowledge to check the validity of the answers.
Estimate answers to calculations when solving problems with whole numbers.

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