Key learning points

1. An equation involving an additive step can be represented with a bar model.
2. Using the bar model you can write all the arrangements of the equation with an additive step.
3. One of the arrangements will give the solution to the equation.
4. This can be written algebraically to find the solution.

Keywords

• Additive inverse - The additive inverse of a number is a number that, when added to the original number, gives the sum of 0

Common misconception