KS1 (Age 5-7)KS2 (Age 7-11)11 Plus (Age 7-11)KS3 (Age 11-14)GCSE (Age 14-17)PSHE A.I.ESL Spanish Specialist Games

Need help with Year 1 Numbers - Number Bonds to 20? Ask our AI Tutor!

AI Tutor - Lucy

Connecting with Tutor...

Please wait while we establish connection

Hi! I'm Lucy, your AI tutor. How can I help you with Year 1 Numbers - Number Bonds to 20 today?

now

Do you know all the pairs of numbers which add up to 20?

Year 1 Numbers - Number Bonds to 20

Master number bonds to 20. Spot pairs that add to 20 quickly to boost mental maths and confident calculating.

Explore the Topic →

(quiz starts below)

Fascinating Fact:

Number bonds are pairs that make 20. Example: 7 and 13 make 20.

In KS1 Maths, number bonds are trusted pairs that add to a target. Here, the target is 20. Knowing these pairs speeds up addition and subtraction in everyday problems.

Key Terms

Number bond: Two numbers that add to a set total, such as 9 and 11 making 20.
Sum: The answer you get when you add numbers together.
Part-part-whole: A way to show two parts joining to make a whole (for 20, 6 + 14 = 20).

Practise quick adding with the Addition Game before you try the quiz.

Frequently Asked Questions (Click to see answers)

What are number bonds to 20?

They are pairs of numbers that add to 20, like 1+19, 4+16, 8+12, and 10+10. Knowing them helps you add and subtract faster.

How do number bonds help with subtraction in Year 1?

If you know 7 + 13 = 20, then 20 − 7 = 13 and 20 − 13 = 7. Number bonds give the missing part quickly.

What is an easy way to learn bonds to 20?

Start with bonds to 10 (3+7, 4+6), then build to 20 by adding ten to one part (13+7, 14+6). Use counters or tens frames to see the pairs.

Try These Related Quizzes

Question 1

Which set is correct?

9 + 18 = 20, 18 + 9 = 20, 20 - 18 = 9, 20 - 9 = 18

12 + 11 = 20, 11 + 12 = 20, 20 - 11 = 12, 20 - 12 = 11

15 + 7 = 20, 7 + 15 = 20, 20 - 15 = 7, 20 - 7 = 15

19 + 1 = 20, 1 + 19 = 20, 20 - 1 = 19, 20 - 19 = 1

For the subtraction facts, 20 always comes at the beginning of the calculation

Question 2

20 - 8 = ?

8 + 12 = 20, so 20 - 8 = 12

Question 3

Which number is added to 14 to make 20?

14 + 6 = 20

Question 4

Which number is added to 10 to make 20?

10 + 10 = 20

Question 5

Which set is correct?

15 + 6 = 20, 6 + 15 = 20, 20 - 15 = 6, 20 - 6 = 15

11 + 9 = 20, 9 + 11 = 20, 20 - 9 = 11, 20 - 11 = 9

13 + 17 = 20, 17 + 13 = 20, 20 - 13 = 17, 20 - 17 = 13

14 + 9 = 20, 9 + 14 = 20, 20 - 9 = 14, 20 - 14 = 9

The four facts are all related to each other

Question 6

What is a number bond to 20?

Numbers which are on a number line

A strong number less than 20

A pair of numbers which add up to 20

A number which can be added to 20

A number bond is a pair of numbers which add to give a target such as 20

Question 7

Which of the following is not a number bond to 20?

17 + 3

2 + 18

19 + 4

11 + 9

19 + 4 = 23, not 20

Question 8

Which of the following is not a number bond to 20?

15 + 5

18 + 3

20 + 0

1 + 19

18 + 3 = 21, not 20

Question 9

If 13 + 7 = 20, then...

7 - 13 = 20

13 - 7 = 20

13 - 20 = 7

20 - 13 = 7

20 - 13 = 7 is one of the subtraction facts for 13 + 7 = 20

Question 10

If 6 + 14 = 20, then...

20 - 6 = 14

6 - 20 = 14

14 - 20 = 6

6 - 14 = 20

20 - 6 = 14 is one of the subtraction facts for 6 + 14 = 20

You can find more about this topic by visiting BBC Bitesize - What are number bonds?

Author: Angela Smith (Primary School Teacher & KS1 Quiz Writer)

**Unlimited Quizzes Await You! 🚀**

Hey there, quiz champ! 🌟 You've already tackled today's free questions.
Ready for more?

🔓 Unlock UNLIMITED Quizzes and challenge yourself every day. But that's
not all...

🔥 As a Subscriber you can join our thrilling "Daily Streak" against other
quizzers. Try to win a coveted spot on our Hall of Fame Page.

Don't miss out! Join us now and keep the fun rolling. 🎉

Subscribe & Play

**Unlimited Quizzes Await You! 🚀**

Hey there, quiz champ! 🌟 You've already tackled today's free questions. Ready for more?

🔓 Unlock UNLIMITED Quizzes and challenge yourself every day. But that's not all...

🔥 As a Subscriber you can join our thrilling "Daily Streak" against other quizzers. Try to win a coveted spot on our Hall of Fame Page.

Don't miss out! Join us now and keep the fun rolling. 🎉

Subscribe & Play

Contact Details

Education Quizzes

Heron's Way, Wragg Marsh
Spalding
Lincolnshire
PE12 6HH
England

Email

admin@educationquizzes.com

Customer Service

Home Page Parents Students Tutors Teachers
Colour Filters Safe AI
Your Account

Here To Help

About Us

Our Team Testimonials Parent Reviews Terms and Conditions Privacy Policy

Leave Feedback