# Subtract 4-digit numbers using column subtraction

I can subtract two 4-digit numbers using column subtraction, regrouping hundreds, tens and ones.

# Subtract 4-digit numbers using column subtraction

I can subtract two 4-digit numbers using column subtraction, regrouping hundreds, tens and ones.

## Lesson details

### Key learning points

- Column subtraction can be used to subtract 4-digit numbers.
- Work from the ones column on the right so that regrouping can be represented.
- If the tens value of the subtrahend is greater than the tens value of the minuend, regroup 1 hundred as 10 tens.
- If the hundreds value of the subtrahend is greater than the hundreds of the minuend, regroup 1 thousand as 10 hundreds.

### Common misconception

Trying to subtract 3 from 2 for example without regrouping and seeing the difference as 1

Continually acknowledge the whole and the parts in each 'column' so that children know what we have and what is being subtracted.

### Keywords

Column subtraction - Column subtraction is a way of subtracting numbers by writing a number below another.

Regrouping - The process of unitising and exchanging between place values is known as regrouping.

### 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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