Find out how you can use a number line to help when adding and subtracting. Odd and even numbers ... Explore how the numbers 11 to 19 are made up of tens and ones. Numbers to 20 Learn on how ...

Here are the numbers 1 to 20 shown on a number line. You can use a number line to help you count on. You may already know the order the numbers go in. You count on by one to find which number is ...