# Solve problems using knowledge of addition and subtraction of multiples of 10

I can solve problems by applying different strategies for adding and subtracting multiples of 10

# Solve problems using knowledge of addition and subtraction of multiples of 10

I can solve problems by applying different strategies for adding and subtracting multiples of 10

## Slide deck

## Lesson details

### Key learning points

- Representations help to identify the calculation needed to solve a problem.
- Different strategies can be applied to solve different problems.
- Evaluating or discussing strategies helps to find the most efficient one.

### Common misconception

Pupils not understanding what the problem is asking them to find out and identifying the operation.

Model the use of bar models and manipulatives to represent the problem and how to identify the operation and calculations needed.

### Keywords

Add - Bringing two or more numbers or things together to make a new total.

Subtract - Taking one number from another.

Strategy - A way to solve a problem.

Part - A piece or section of a whole.

Whole - All of a group or 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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## Worksheet

## Starter quiz

### 6 Questions

90 = 50 + 40

90 = 80 + 10

50 = 40 + 10

50 = 20 + 30

60

50

40

30

## Exit quiz

### 6 Questions

part

whole

part