New
New
Year 5
Use and explain the most efficient strategies when subtracting quantities of money
I can use and explain the most efficient strategies when subtracting quantities of money.
New
New
Year 5
Use and explain the most efficient strategies when subtracting quantities of money
I can use and explain the most efficient strategies when subtracting quantities of money.
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Lesson details
Key learning points
- Informal calculation strategies such as rounding and compensating can be applied to calculating with money.
- Same sum generalisation can be applied to calculating with money.
- Column subtraction can be used to calculate with money but is not always the most efficient strategy.
Keywords
Minuend - The minuend is the number being subtracted from.
Subtrahend - The subtrahend is a number subtracted from another.
Difference - The difference is the result after subtracting one number from another.
Common misconception
Pupils will often default to using the column subtraction method even when it is inefficient.
The slide deck gives examples of when column subtraction can be replaced by quicker, more efficient methods, such as 'counting on'.
Some pupils may still need some of the calculations setting out for them as they develop confidence with the method. This scaffold should be removed as soon as possible.
Teacher tip
Licence
This content is © Oak National Academy Limited (2025), licensed on
Open Government Licence version 3.0
except where otherwise stated. See Oak's terms & conditions (Collection 2).Lesson video
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Starter quiz
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6 Questions
Q1.
Starting with the least, sort these money amounts.
Q2.
Calculate: 386 − 124 =
Q3.
Calculate: 3.86 − 1.24 =
Q4.
A book costs £2.99. How much change do I get from £5? Remember to write your answer with the correct notation.
Q5.
Calculate: 5.42 − 2.38 =
Q6.
Match the vocabulary with the correct definition.
the number being subtracted from
a number being subtracted from another
the result after subtracting on number from another
Exit quiz
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6 Questions
Q1.
In the equation £4.40 − £1.05 = £3.35, which part of the calculation is the subtrahend?
£4.40
−
=
£3.35
Q2.
In the equation £4.40 − £1.05 = £3.35, what word might be used to label the £4.40?
subtrahend
difference
Q3.
I buy two magazines. One costs £4.82 and the other costs £2.41. What calculation needs to be performed to work out the difference in price?
£4.82 + £2.41
£2.41 − £4.82
Q4.
I buy two magazines. One costs £3.75 and the other costs £1.89. Work out the difference. Remember to write your answer using correct notation.
Q5.
What is my change if I pay for a toy costing £12.99 with a £20 note? Remember to write your answer using correct notation.
Q6.
Calculate: £40.80 − £12.95 = Remember to write your answer using correct notation.