# Multiply a 3-digit by a 1-digit number with no regroups

I can multiply a 3-digit by a 1-digit number using expanded and short multiplication (no regroups).

# Multiply a 3-digit by a 1-digit number with no regroups

I can multiply a 3-digit by a 1-digit number using expanded and short multiplication (no regroups).

## Slide deck

## Lesson details

### Key learning points

- Expanded multiplication of a 3-digit by a 1-digit number will give three numbers to add to calculate the overall product
- Short multiplication builds the overall product from the ones column to the hundreds with no regrouping.
- The partial products can be seen in the expanded and short multiplication strategies.

### Common misconception

Misalignment of digits when setting out short multiplication.

Clear teacher modelling, ask pupils 'what does this digit represent?' Return to expanded layout briefly, before re-doing the problem.

### Keywords

Expanded multiplication - A way of recording the steps of a calculation focusing on partitioning one or more factors and showing partial products.

Short multiplication - A way of recording using columns to set out and calculate a multiplication.

Factors - Numbers we can multiply together to get another number.

### 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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