New
New
Year 3

Identify the addends and the sum in column addition

I can identify the addends and the sum in column addition.

New
New
Year 3

Identify the addends and the sum in column addition

I can identify the addends and the sum in column addition.

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Lesson details

Key learning points

  1. In column addition, one addend is written below the other.
  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

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

  • 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).

Video

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6 Questions

Q1.
What calculation is represented by the base ten blocks?
An image in a quiz
24 + 21
Correct answer: 24 + 11
22 + 11
14 + 21
Q2.
What calculation is represented by the base ten blocks?
An image in a quiz
101 + 103
110 + 113
Correct answer: 110 + 130
Q3.
Which number in the bar model is the sum?
An image in a quiz
100
140
Correct answer: 240
Q4.
What is the missing addend?
An image in a quiz
Correct Answer: 40, forty
Q5.
What is the sum is this calculation? 62 + 34 = 96
62
34
Correct answer: 96
Q6.
Which numbers are the addends in this calculation? 88 = 54 + 34
88
Correct answer: 54
Correct answer: 34

6 Questions

Q1.
What are the addends in this column addition?
An image in a quiz
Correct answer: 22
Correct answer: 25
47
Q2.
What is the sum in this column addition?
An image in a quiz
22
25
Correct answer: 47
Q3.
Jun represents the column addition as a bar model. Which bar model shows the correct position of 76?
An image in a quiz
a)
b)
Correct answer: c)
Q4.
Look at the column addition. Which statements are correct?
An image in a quiz
Correct answer: 96 is the sum.
53 and 96 are both addends.
Correct answer: 43 is an addend.
53 is the sum.
Q5.
Which equations match the column addition?
An image in a quiz
Correct answer: 61 + 24 = 85
21 + 64 = 85
85 = 21 + 64
Correct answer: 85 = 61 + 24
Q6.
Which equations match the column addition?
An image in a quiz
44 + 55 = 99
Correct answer: 99 = 45 + 54
Correct answer: 54 + 45 = 99
99 = 55 + 44

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