New
New
Year 2

Explain how a multiplication equation with 2 as a factor is related to doubling

I can explain how a multiplication equation with 2 as a factor is related to doubling.

New
New
Year 2

Explain how a multiplication equation with 2 as a factor is related to doubling

I can explain how a multiplication equation with 2 as a factor is related to doubling.

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Lesson details

Key learning points

  1. If 2 is a factor, you can use doubles facts to solve the problem.
  2. 2 could represent the group size or the number of groups.
  3. Identify the group size and the number of groups in the multiplication story.

Keywords

  • Double / doubling - To become twice as many / to multiply by two.

Common misconception

Children may not grasp why 5 + 5 is equal to 2 × 5

Continue to use the stem sentences to help children understand doubling; 5 + 5 is the same as 2 groups of 5. This is the same as 2 × 5. Children can use a 2 times table chart to help them answer questions.

At this point, children know doubling as an additive structure. They will now be able to represent a doubles addition equation as a multiplication equation. Remind children that doubling is the same as multiplying by 2
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.
Laura is counting in 2s. What multiple of 2 will Laura say next? 4, 6, 8,
Correct Answer: 10, ten
Q2.
Look at the image. It shows 5 groups of
An image in a quiz
Correct Answer: 1, one
Q3.
Select the correct way to complete this sentence. 2 groups of 5 can be represented as __________
two 1 pence coins
Correct answer: two 5 pence coins
two 10 pence coins
five 5 pence coins
four 10 pence coins
Q4.
Which grouping of coins shows 1 group of 10?
Correct answer: ten 1 pence coins
one 1 pence coin
Correct answer: one 10 pence coin
three 5 pence coins
four 10 pence coins
Q5.
Match the expression to the groupings it is equal to.
Correct Answer:2 × 1,1 group of 2

1 group of 2

Correct Answer:4 × 2,2 groups of 4

2 groups of 4

Correct Answer:2 × 8,8 groups of 2

8 groups of 2

Correct Answer:9 × 2,2 groups of 9

2 groups of 9

Correct Answer:10 × 2,2 group of 10

2 group of 10

Q6.
Aisha has 5 of the same coin. Laura has one coin. Laura has the same amount of money as Aisha. If Aisha’s coins are 2 p each, what is Laura’s coin? p.
Correct Answer: 10, ten

6 Questions

Q1.
Look at the image below. There are 2 groups of
An image in a quiz
Correct Answer: 3, three
Q2.
The image can be seen as 2 groups of 4 This is the same as double
An image in a quiz
Correct Answer: 4, four
Q3.
Look at the image below. You can say 5 + 5 = 10 is the same as __________
An image in a quiz
5 × 5
Correct answer: 2 × 5
2 × 2
5 × 10
Q4.
Select the correct multiplication equations which represent the image below.
An image in a quiz
1 × 3
Correct answer: 2 × 3
3 × 3
Correct answer: 3 × 2
4 × 3
Q5.
Match the expressions and descriptions so they are equal in value.
Correct Answer:3 + 3,2 × 3

2 × 3

Correct Answer:2 groups of 4,2 × 4

2 × 4

Correct Answer:5 + 5,2 × 5

2 × 5

Correct Answer:Double 6,2 × 6

2 × 6

Correct Answer:7, 2 times,2 × 7

2 × 7

Q6.
Aisha picks a number card between 1 and 12, and doubles it. The product is 14 What card did Aisha pick?
An image in a quiz
Correct Answer: 7, seven

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