New
New
Year 1

Double numbers and explain what doubling means

I can double numbers and explain what doubling means.

New
New
Year 1

Double numbers and explain what doubling means

I can double numbers and explain what doubling means.

Lesson details

Key learning points

  1. When both addends are equal, we are doubling.
  2. Doubling means adding two equal addends.
  3. Doubling a whole number always gives an even number.

Keywords

  • Double / doubling - To become twice as many.

  • Addends - Any of the numbers that are added together.

  • Equal - Exactly the same amount or value.

Common misconception

Children may struggle to see that a double is two of the same thing.

Spend time exploring doubles that can be found in the children's immediate environment e.g. using their hands or playing a game of dominoes.

Begin by reviewing counting in even numbers to ten, forwards and backwards. Children should have had lots of practice of this and so should be fluent. As suggested, take time to explore doubles beyond the lesson, setting up opportunities to play games at break and lunch time for example.
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).

Lesson video

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6 Questions

Q1.
What is the missing number in this equation? 5 + = 5
5
1
2
Correct answer: 0
Q2.
What is the missing number from this equation? - 0 = 9
0
Correct answer: 9
90
8
Q3.
Which of these equations has a difference of 0?
{{ }} = 8 − 0
Correct answer: {{ }} = 2 − 2
{{ }} = 5 − 0
Q4.
Which representation shows that 0 has been subtracted from this ten frame?
An image in a quiz
An image in a quiz
An image in a quiz
Correct Answer: An image in a quiz
An image in a quiz
Q5.
Match the equations to their solutions?
Correct Answer:8 - 8 = ,0

0

Correct Answer:0 + 0 =,0

0

Correct Answer:0 + 8 =,8

8

Correct Answer:8 + 0 =,8

8

Q6.
Is Sam's statement True or False?
An image in a quiz
Correct answer: True
False

6 Questions

Q1.
How many cubes are needed on the other side to make this equal?
An image in a quiz
An image in a quiz
Correct Answer: An image in a quiz
An image in a quiz
An image in a quiz
Q2.
What doubling equation is being shown on this seesaw?
An image in a quiz
4 + 4 = 8
1 + 1 = 2
Correct answer: 2 + 2 = 4
Q3.
What doubling fact is being shown here?
An image in a quiz
5 + 5 = 10
Correct answer: 4 + 4 = 8
2 + 2 + 2 + 2 = 8
Q4.
What is the missing part in this part-part-whole model?
An image in a quiz
Correct Answer: 4, four
Q5.
Jun has 3 sweets. Sam has double the amount. How many sweets does Sam have?
3
4
5
Correct answer: 6
Q6.
Sam swims 4 lengths of the swimming pool. Jun swims 7 lengths. Jun says that he swam double the number of lengths. Is this True or False?
True
Correct answer: False

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