🔢 Maths

Counting to 20

Ages 5–7

You will learn

Count to 20 and back, and know that the teen numbers are 10 and some more.

Before you start

Counting objects to 10.

Quick answer

After 10 we count 11, 12, 13, 14, 15, 16, 17, 18, 19, 20. Each teen number is 10 and some more: 14 is 10 and 4 more.

Let’s learn

After 10, we keep counting:

11 · 12 · 13 · 14 · 15 · 16 · 17 · 18 · 19 · 20

Teen numbers are 10 and some more

🔵🔵🔵🔵🔵🔵🔵🔵🔵🔵   🔴🔴🔴

That is 10 blue dots and 3 more red dots. Together they make 13.

  • 11 is 10 and 1 more.
  • 15 is 10 and 5 more.
  • 20 is 10 and 10 more.

Count on and count back

  • Count on (going up): 14, 15, 16, 17.
  • Count back (going down): 17, 16, 15, 14.

Try it

Count to 20 while you jump. Then count back from 20 to 1 while you sit down slowly!

Check what you know

Choose an answer, then press Check. You can try again if you need to.

  1. 1 What number comes after 13?
  2. 2 What number comes just before 20?
  3. 3 10 and 6 more makes…
  4. 4 Which of these is the number fifteen?
  5. 5 Count back: 20, 19, 18, … What comes next?
  6. 6 Which number is bigger: 12 or 17?

Try this next

Count 20 small things, like pasta pieces or buttons. Put the first 10 in one pile, then count on from 10 for the rest.