Key learning points

1. Representing a problem can help us to find addition and subtraction facts.
2. In addition, we can change the order of the addends and the sum will remain the same.
3. We can use addition facts to help us find subtraction facts.
4. If I know 3 + 2 = 5, I know that 5 - 2 = 3

Common misconception

Keywords

• Add - To find the total, or sum, by combining two or more parts (addends), or to increase an amount by adding another.

• Subtract - To partition one part from another (the subtrahend from the difference), or to decrease an amount by taking an amount away.

• Represent - To communicate mathematical ideas through models.