New
New
Year 3

# Add 2-digit numbers using column addition

I can add 2-digit numbers using column addition.

New
New
Year 3

# Add 2-digit numbers using column addition

I can add 2-digit numbers using column addition.

Share activities with pupils
Share function coming soon...

## Lesson details

### Key learning points

1. The addends are written in columns with the same value digits in the same column
2. Start by adding numbers with the smallest place value first
3. Record the sum below the addends

### Common misconception

Pupils may refer to adding numbers in the tens as 3 + 6 rather than 30 + 60

Encourage them to refer to the tens numbers as tens, and use the language appropriately. In 34 + 44, we add 4 and 4 together and then we add 30 and 40 together. This will support their reasoning as they progress in this unit.

### Keywords

• Addend - An addend is a number added to another.

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

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

### 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 is represented by the digit 5 in 56?
5
500
Q2.
What is represented by the digit 2 in 256?
2
20
Q3.
Which calculation matches the base ten blocks representation?
123 + 54
133 + 44
134 + 45
Correct answer: 133 + 54
Q4.
Which calculation matches the base ten blocks representation?
133 + 144
134 + 143
Correct answer: 135 + 143
145 + 134
Q5.
Which calculation matches the column addition?
124 + 131
214 + 131
224 + 121
Correct answer: 224 + 131
Q6.
Which two numbers are being added in the column addition?
two hundred and three
Correct answer: two hundred and thirty
two hundred and sixty
Correct answer: two hundred and six

## Exit quiz

### 6 Questions

Q1.
Which addition calculation is represented by the base ten blocks?
42 + 36
Correct answer: 32 + 46
33 + 46
32 + 44
Q2.
thirty-four