In this activity, we will be adding and subtracting positive and negative numbers.

Use the number ladder to help you to answer the questions.

Remember, for a positive number, move up the ladder.

For a negative number, move down the ladder.

Always begin at 0.

Example:

3 - 5

Start at 0, move up 3 spaces, then down 5 spaces.

The answer is -2

3 - 5 = -2

-4 - 3

Start at 0, move down 4 spaces, then down another 3 spaces.

The answer is -7

-4 -3 = 7

Let's have a go at some questions now.