New
New
Year 1

Double the numbers 6 to 9 and halve the result explaining what doubling and halving is

I can double the numbers 6 to 9 and halve the result explaining what doubling and halving is.

New
New
Year 1

Double the numbers 6 to 9 and halve the result explaining what doubling and halving is

I can double the numbers 6 to 9 and halve the result explaining what doubling and halving is.

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Lesson details

Key learning points

  1. Recall doubling and halving facts to 10
  2. Doubling the numbers 6-9 gives an even teen number.
  3. Halving an even teen number gives a number from 6-9

Common misconception

If pupils are not more fluent in their doubling facts within 5 they may struggle to efficiently double and halve larger numbers.

Provide examples of doubling facts within 5 using representations such as ten frames to support learners.

Keywords

  • Double - To multiply by 2. To have 2 of something.

  • Halve - To divide into two equal parts.

When pupils halve, they should focus attention on the related doubling fact. Repetition of the stem sentence and use of the same representations will support this.
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 is the missing part?
An image in a quiz
Correct Answer: 2, two
Q2.
What is the missing whole?
An image in a quiz
Correct Answer: 6
Q3.
What is the missing whole?
An image in a quiz
Correct Answer: 8, eight
Q4.
Laura partitions the number 19 into one part of 10 and another part. What is the missing part?
Correct Answer: 9, nine
Q5.
Complete the sentence. 6 can be partitioned into one part of 5 and one part of
Correct Answer: 1, one
Q6.
Match the equation to the correct sum.
Correct Answer:1 + 1 =,2

2

Correct Answer:2 + 2 =,4

4

Correct Answer:4 + 4 =,8

8

6 Questions

Q1.
What is double 5?
An image in a quiz
Correct Answer: 10, ten
Q2.
What is double 8?
An image in a quiz
Correct Answer: 16, sixteen
Q3.
What is the missing whole?
An image in a quiz
Correct Answer: 18, eighteen
Q4.
Finish the sentence. I know that double 7 is 14 so half of 14 is
Correct Answer: 7, seven
Q5.
What do the ten frames show?
An image in a quiz
Correct answer: Double 6 is 12
Double 12 is 24
Correct answer: 6 + 6 = 12
Correct answer: Half of 12 is 6
Q6.
The two parts are the same size. What are they?
An image in a quiz
Correct Answer: 8, 8 and 8