Basic 6Mathematics18 min
Integer Addition and Subtraction
Learners model temperature and debt changes on a number line.
Add and subtract integers using movement on a number line.
A thermometer and class debt record both move up and down, creating a need to track positive and negative changes.
Integer Addition and Subtraction illustration
Learners model temperature and debt changes on a number line.
Calculate -3 + 7.
- Start at -3 on the number line and face right because 7 is positive.
- Move 7 steps right and land on 4, so -3 + 7 = 4.