A number line can be useful when answering questions involving negative numbers. When adding a positive number, go up the number line (move to the right). When subtracting a positive number, go down ...

Practice adding and subtracting within 20 using a Double 10-frame & number line. Represent a teen number using a number bond to solve a Mystery Math Mistake. Use Notice and Wonder with a marble game ...

Subtraction is a fundamental math skill that kids learn early in their academic journey. While it's a crucial building block for more complex arithmetic, the process of "taking away" can sometimes ...

A GCSE Maths video about adding and subtracting with negative numbers. The video shows how to use a number line and how to work out the answer by using number discs.