MathsYears 1–2Number & Place Value

Number bonds within 20

Know and use number bonds to 20, including related subtraction facts

What you'll learn

  1. 1

    Imagine 20 little red bricks 🧱. Two numbers that join together to make 20 are called number bonds!

  2. 2

    If you have 20 bricks and you give 10 away, how many do you have left?

  3. 3

    Tap two numbers that add up to 20. 🎯

  4. 4

    Let's find a bond for 20 together. 🧮

  5. 5

    Find another pair that makes 20 — tap the numbers. 🎯

  6. 6

    Which two numbers add up to 20?

Practise Number bonds within 20 with Whizlo

Free AI-tutored lessons, unlimited practice questions, and progress tracking for ages 5–7. Aligned to the UK National Curriculum.

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