Maths: Easy This number bonds lessons covers number bonds of 10 and 20. With interactive questions and animation, pupils will be able to understand the lesson.

1. Number Bonds (10-20)
Learning Objective:
To know the number bonds for 10
and 20.

2. What are number bonds?

3. What are number bonds?
A good way to remember what number
bonds are is to think of number family.

4. What are number bonds?
A good way to remember what number
bonds are is to think of number family.

5. What are number bonds?
A good way to remember what number
bonds are is to think of number family.
Child Child Parents

6. What are number bonds?
A good way to remember what number
bonds are is to think of number family.
It's like a game. You have to add the 2
child numbers up to get the parents number.
Child Child Parents

7. Let's find the number bond for 10
? 10?

8. Let's find the number bond for 10
? 10?
For the first box, you can pick a number between
1 and 9.

9. Let's find the number bond for 10
1 10?
We are going to start off with 1.

10. Let's find the number bond for 10
1 10?
There are 2 ways to find out how to get the answer.
Whichever way you find easy, you can use.

11. Let's find the number bond for 10
1 10?
The first way is to use your fingers to count from
1 to 10. Work out the answer using your fingers.

12. Let's find the number bond for 10
1 10?
The answer you should have got is 9.

13. Let's find the number bond for 10
1 109
Your answer goes in the second box.

14. Let's find the number bond for 10
1 109
To make sure your correct, add 1 and 9 together.

15. Let's try some on our own
1)
2)
3)
4)
2 10?
4 10?
3 10?
5 10?

16. Answers
1)
2)
3)
4)
2 108
4 106
3 107
5 105

17. Working out the other answers

18. Working out the other answers
So we only went up to 5 in that exercise, this
is because 6,7,8 and 9 are easy to work out.

19. Working out the other answers
So we only went up to 5 in that exercise, this
is because 6,7,8 and 9 are easy to work out.
Take this example:
2 108

20. Working out the other answers
So we only went up to 5 in that exercise, this
is because 6,7,8 and 9 are easy to work out.
Take this example:
All you have to do it swap the red and the
green box.
2 108

21. Working out the other answers
So we only went up to 5 in that exercise, this
is because 6,7,8 and 9 are easy to work out.
Take this example:
All you have to do it swap the red and the
green box.
2108

22. Working out the other answers
So we only went up to 5 in that exercise, this
is because 6,7,8 and 9 are easy to work out.
Take this example:
All you have to do it swap the red and the
green box.
2108

23. Working out the other answers
So we only went up to 5 in that exercise, this
is because 6,7,8 and 9 are easy to work out.
Take this example:
All you have to do it swap the red and the
green box.
2 108

24. Working out the other answers
So all you have to do is work out 1-5 and
then 6-9 is easy to work out.
2 108

25. Let's try some on our own
? 106
? 107
? 108
? 108
1)
2)
3)
4)

26. Answers
4 106
3 107
2 108
1 108
1)
2)
3)
4)

27. Working out number bonds to 20

28. Working out number bonds to 20
This process is really easy now you have
learnt number bonds to 10.

29. Working out number bonds to 20
This process is really easy now you have
learnt number bonds to 10.
This is what you can do:

30. Working out number bonds to 20
This process is really easy now you have
learnt number bonds to 10.
This is what you can do:
4 106

31. Working out number bonds to 20
This process is really easy now you have
learnt number bonds to 10.
This is what you can do:
4 206
Firstly, we change the blue
box from 10 to 20.

32. Working out number bonds to 20
This process is really easy now you have
learnt number bonds to 10.
This is what you can do:
4 206
Secondly, in this example, the
question wants you to work out
16+ ? = 20.

33. Working out number bonds to 20
This process is really easy now you have
learnt number bonds to 10.
This is what you can do:
4 2016
All you need to do is add a 1
in front of this 6. So it makes 16.

34. Working out number bonds to 20
This process is really easy now you have
learnt number bonds to 10.
This is what you can do:
4 2016
Now work it out. Does 16+4=20?

35. Working out number bonds to 20
This process is really easy now you have
learnt number bonds to 10.
This is what you can do:
4 2016
Yes it does. And thats how you
work out number bonds to 20.

36. Plenary

37. Plenary
In your books, write down:
• A number bond of 10

38. Plenary
In your books, write down:
• A number bond of 10
• A number bond of 20

39. Plenary
In your books, write down:
• A number bond of 10
• A number bond of 20
Turn to your learning objective:

40. Plenary
In your books, write down:
• A number bond of 10
• A number bond of 20
Turn to your learning objective:
• RAG your work (red,amber or green)

41. Thank you for using my lesson.
Created by: coolteacher2276
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