# Use knowledge of 10 and a bit to solve problems

I can use my knowledge of 10 and a bit to solve problems.

# Use knowledge of 10 and a bit to solve problems

I can use my knowledge of 10 and a bit to solve problems.

## Slide deck

## Lesson details

### Key learning points

- The teens numbers can be partitioned into ten and a bit.
- Problems can be represented using part-part-whole models, tens frames and sum equations.
- The 10 and a bit can be represented in the problem.

### Common misconception

Pupils continue to count all when finding the sum instead of counting on from 10 or using their developing fluency with partitioning teen numbers into 10 and a bit.

Provide concrete and pictorial examples where 10 is provided as a group that is hard to separate and count. Continue to emphasise one ten as a group of 10 that does not need to be counted in ones.

### Keywords

Partition - The act of splitting an object or value down into smaller parts.

Part - A piece or section of the whole.

Sum - The total when numbers are added together.

### 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

14

16

19

4 ones

6 ones

7 ones