Watch: One more and one less within ten
Example 1
Here are some doughnuts.
How many are there altogether?
There are 4 doughnuts.
One more doughnut has been added. How many doughnuts are there now?
5 is one more than 4.
4 + 1 = 5
Using a number line
We can use a number line to help us count one more or on less.
One more than 4 is 5.
When you count on one from your number, the number gets bigger by one.
What happens if you count back from your number?
Look at 4 on the number line below.
What number is one less than 4?
One less than 4 is 3.
Watch: Counting from 1 to 10
You can sing along too!
Activity
Karate Cats Maths game. game
Train with the Karate Cats to become an expert in addition and subtraction, multiplication and division, place value and more!
More on Counting and ordering
Find out more by working through a topic
- count9 of 20
- count10 of 20
- count11 of 20
- count12 of 20