The last two examples showed us that taking away balloons (subtracting a positive) or adding weights (adding a negative) both make the basket go down. So these have the same result: (+6) − (+3) = (+3) (+6) + (−3) = (+3) In other words subtracting a po

A number line can help you to visualise both positive and negative numbers and the operations (adding and subtracting) that you can do with them. When you have an addition or subtraction to calculate, you start at the first number and move the second numb

Using a number line showing both sides of zero is very helpful to help develop the understanding of working with positive and negative numbers/integers. It's easier to keep track of the negative numbers if you enclose them in brackets.