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Unit F – Subtraction Steps
This maths scheme of work for Key Stage Two gets the children to practise mental and written calculation strategies to subtract pairs of numbers with up to four digits. The class can use concrete equipment and diagrams to model how to use different methods when subtracting pairs of numbers.
Practise mental and written calculation strategies to subtract pairs of numbers with up to four digits including exchange between place value
Lesson One : Number Changes
Explain and model some of the methods that can be used to subtract different pairs of four digit numbers and ones using an informal written method of calculation
Lesson Two : Thousands and Tens
Investigate and record changes that can happen to the place value of the digits in a number when subtracting different pairs of four digit number and tens
Lesson Three : Hundreds and Thousands
Practise subtracting selected multiples of hundreds and thousands from different four digit numbers by using some informal calculation techniques for subtraction
Lesson Four : Number Blocks
Identify and record how to use concrete objects to model and illustrate how to subtract different pairs of four digit numbers with no exchange between place value
Lesson Five : Subtraction Exchange
Identify and model how to subtract different pairs of four digit numbers with one exchange between place value needed to complete the number calculation
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