LET’S TRY ONE
A quantity increases from 50 to 60. What is the percent increase?
20
The increase is 10. Divide by the original 50, then multiply by 100: 20%.
Learning steps & teaching tips
Express an increase relative to the original amount.
- Find the change first, then compare it with the starting value.
- Work through the example and explain why each operation is used.
- Estimate or use another method to check the result before choosing.
Try it together
Work with a partner: solve one example, explain the method, then change one number and predict what changes.
Find the change first, then compare it with the starting value.