# Solve problems involving multiples of ten

I can solve problems involving multiples of ten.

# Solve problems involving multiples of ten

I can solve problems involving multiples of ten.

## Lesson details

### Key learning points

- Unitising and known facts help you to add and subtract multiples of ten
- If 3 + 2 is equal to 5 then 3 tens + 2 tens is equal to 5 tens which is equal to 50
- If 5 - 2 is equal to 3 then 5 tens subtract 2 tens is equal to 3 tens which is equal to 30

### Common misconception

Children may rely on counting in tens rather than using known facts to add and subtract multiples of ten.

Encourage children to look for patterns as they add and subtract multiples of ten. Compare to the single-digit facts they know. Ask 'Is there a known fact that can help you?'

### Keywords

Add - To find the total, or sum, by combining two or more parts (addends), or to increase an amount by adding another.

Subtract - To partition one part from another (the subtrahend from the difference), or to decrease an amount by taking an amount away.

Multiple of ten - A multiple of 10 is a number which can be made of groups of ten.

### 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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