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Year 1

Find pairs of numbers that sum to 10

I can find pairs of numbers that sum to ten.

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New
New
Year 1

Find pairs of numbers that sum to 10

I can find pairs of numbers that sum to ten.

Download all resources
Share activities with pupils

Lesson details

Key learning points

  1. Ten can be partitioned into pairs of numbers that sum to ten.
  2. Quickly remembering these number pairs is important for later work.
  3. Knowledge of odd and even numbers can be used to decide if a pair of numbers sums to 10.
  4. One number pair can be used to help you find another number pair.

Common misconception

Some children may revert to inefficient counting strategies involving counting in ones.

Provide additional practice and display visuals to support around room. Play games to promote fluency little and often as part of daily activities.

Keywords

  • Sum - The result of adding two or more numbers.

  • Pair - Two together, often with something in common.

  • Odd - Any whole number that cannot be put into pairs.

  • Even - Any whole number that can be put into pairs.

Although children may confidently identify bonds to ten, they cannot always recognise these pairs in written addition and subtraction contexts and may resort to other strategies to 'calculate'. This lesson focuses on reinforcing the link between known number facts and addition/subtraction problems.
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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Starter quiz

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6 Questions

Q1.
Jacob writes this equation to represent the picture. 3 + 5 = 8 Which of the following equations shows the addends were combined in a different order?
An image in a quiz
8 = 3 + 5
Correct answer: 8 = 5 + 3
Correct answer: 5 + 3 = 8
Q2.
Match to show the addends that have been combined in a different order.
Correct Answer:1 + 9 = 10,9 + 1 = 10

9 + 1 = 10

Correct Answer:2 + 8 = 10 ,8 + 2 = 10

8 + 2 = 10

Correct Answer:10 = 3 + 7,10 = 7 + 3

10 = 7 + 3

Q3.
Which picture shows that 3 + 7 = 7 + 3?
Correct Answer: An image in a quiz
An image in a quiz
An image in a quiz
An image in a quiz
Q4.
Which equation shows that addition is commutative?
3 + 7 = 10
10 = 7 + 3
Correct answer: 7 + 3 = 3 + 7
Q5.
The addends in an equation are 3 and 6. Fill in the missing numbers below to show that, when combined, these addends are equal.
An image in a quiz
Correct Answer: 3 + 6 = 6 + 3, 6 + 3 = 3 + 6
Q6.
Sam says she can write any number as the missing addends. Is she right? ___ + 4 = 4 + ___
Yes, she can write any number to complete the equation.
No, there is only one correct answer.
Correct answer: Yes, but the same number must be used for both sides of the equation

Exit quiz

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6 Questions

Q1.
There are 10 counters altogether. Some are in the hand. How many counters are in the hand?
An image in a quiz
6
5
Correct answer: 4
3
Q2.
There are 10 beads altogether. How many are covered up? beads are covered up.
An image in a quiz
1
2
Correct answer: 3
4
5
Q3.
How has Sam partitioned 10 in this representation? 10 = _ + _
An image in a quiz
Correct Answer: 5 + 5, 5+5
Q4.
Which equation matches the part-part-whole representation? 10 is the whole ...
An image in a quiz
1 is a part and 9 is a part.
Correct answer: 2 is a part and 8 is a part.
3 is a part and 7 is a part.
4 is a part and 6 is a part.
5 is a part and 5 is a part.
Q5.
Which pair of number shapes has a total of ten?
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
Q6.
Match the expressions to show whether they sum to 10, greater than 10 or less than 10
Correct Answer:1 + 8,Less than 10

Less than 10

Correct Answer:2 + 8,Equal to 10

Equal to 10

Correct Answer:3 + 8,Greater than 10

Greater than 10