# Multiply a 2-digit number by a 1-digit number using short multiplication (regrouping 1s to 10s)

I can use short multiplication to record regrouping from the 1s to the 10s.

# Multiply a 2-digit number by a 1-digit number using short multiplication (regrouping 1s to 10s)

I can use short multiplication to record regrouping from the 1s to the 10s.

## Slide deck

## Lesson details

### Key learning points

- If the product of the ones digit is greater than 10, you regroup ten ones into one ten.
- Record the additional ten or tens as a small digit to be added in with the tens.
- Short multiplication results in only one product being recorded.
- There are similarities and differences between the expanded recording and short multiplication.

### Common misconception

Pupils may not align or regroup correctly leading to an inaccurate calculation.

Ask children about the additional ten or tens as a small digit to be added in with the tens. What does this show? What is the value?

### Keywords

Short multiplication - A method using columns to set out and calculate a multiplication is short multiplication.

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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