Explore · Mathematics · Counting & Cardinality

Counting in 2s

Count in multiples of 2, 5, and 10 (skip counting)

ages 5 to 78 practice questionsvideo included

What a learner can do afterwards

Count 2, 4, 6, 8 … up to at least 20
Count 5, 10, 15, 20 … up to at least 50
Count 10, 20, 30 … up to 100

The lesson

Skip counting means jumping by the same number each time. You do not say every number. Counting by 2s means you jump by 2 each time.

Hop by 2s: 2, 4, 6, 8, 10.

Try it together

Mia lines up her blocks in pairs. She skip-counts: 2, 4, 6, 8. Mia has 8 blocks.

Tap each block and count out loud.

Hop by 5s: 5, 10, 15, 20.

Good to know

Counting by 10s uses the same idea. Jump by 10 each time: 10, 20, 30. Say each number out loud as you go.

Skip counting always jumps by the same number: 2, 5, or 10.

Watch it

Where it sits

Learn first

Rote counting to 100

This opens up

Odd and even numbers Counting forwards and backwards Times tables Odd or Even Telling Time: Minutes Skip Counting (4s, 8s, 50s, 100s)Counting Within 1,000 Counting forwards and backwards (age 6+)Multiplication as repeated addition Finding efficient methods Patterns & Sequences Tenths The multiples of 10

Then practise

8 questions wait behind this lesson, each with its answer explained. Every answer feeds the sky: stars light as they are learned, and dim when it is time to come back.