# 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.

# 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.

## Slide deck

## 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.

### 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'.

### 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.

### Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

## Video

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## Worksheet

## Starter quiz

### 6 Questions

the number being subtracted from

a number being subtracted from another

the result after subtracting on number from another