In this KS1 Maths article you'll learn what number lines are and how to add and subtract using them. We also have KS1 Maths videos, a quiz and lots of examples.

In this KS1 Maths article you'll learn what number lines are and how to add and subtract using them. ... 12 of 15. Using a 100 square. count. 13 of 15. Ordering numbers to 100. count. 14 of 15.