There you go! 6 and 4. Once added together they create the number 10! As do 5 and 5. Now let's have a go at finding some of the number bonds for the number 20. 10 and 10 work! And 12 and 8.

Watch: What is a number line? A number line can be used to add and subtract. Watch the video to learn what a number line is, and how to use it! A number line is a great way to add and subtract.