New
New
Year 3

New
New
Year 3

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## Lesson details

### Key learning points

2. The equals sign shows it is an equation.
3. The sum appears within the equals sign.

### Common misconception

Pupils may struggle to find the parts and the whole in column addition.

Emphasise the sum as being within the 'equals' sign in column addition. Take time to write equations, bar models and column addition and make connections between these.

### Keywords

• Sum - The sum is the total when numbers are added together.

• Equation - An equation shows that one number or calculation is equal to another.

• Column addition - Column addition is a way of adding numbers by writing a number below another.

Pupils will need to use base ten blocks to represent column addition. There are images that can be used in the session for the tasks but access to manipulatives will be really helpful throughout, as will bar model representations.
Teacher tip

### 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).

## Starter quiz

### 6 Questions

Q1.
What calculation is represented by the base ten blocks?
24 + 21
22 + 11
14 + 21
Q2.
What calculation is represented by the base ten blocks?
101 + 103
110 + 113
Q3.
Which number in the bar model is the sum?
100
140
Q4.
Q5.
What is the sum is this calculation? 62 + 34 = 96
62
34
Q6.
Which numbers are the addends in this calculation? 88 = 54 + 34
88

## Exit quiz

### 6 Questions

Q1.
47
Q2.
What is the sum in this column addition?
22
25
Q3.
Jun represents the column addition as a bar model. Which bar model shows the correct position of 76?
a)
b)
Q4.
Look at the column addition. Which statements are correct?
Correct answer: 96 is the sum.
53 and 96 are both addends.
53 is the sum.
Q5.
Which equations match the column addition?
Correct answer: 61 + 24 = 85
21 + 64 = 85
85 = 21 + 64
Correct answer: 85 = 61 + 24
Q6.
Which equations match the column addition?
44 + 55 = 99
Correct answer: 99 = 45 + 54
Correct answer: 54 + 45 = 99
99 = 55 + 44