Calculating Percent Error and Change
Grade 7th Grade · Math · 30 min
What's Included
Learning Objective
I can calculate percent error or percent change to describe the accuracy of estimates or measurements.
Warm-Up Video
OkCalculator.com · 2:42
Your guide to percent error
Guided Notes
3 key concepts
- 1
Percent error is used to show how close you are to being right when your values don't meet the mark in an experiment.
- 2
To calculate percent error, first subtract the measured value from the exact known value, then divide by the exact known value.
- 3
After dividing, the final step to find percent error is to multiply by 100.
Practice Questions
4 questions · Multiple choice & Short answer
Exit Ticket
Quick comprehension check
“A student measures the temperature of boiling water and gets 95°C. The actual boiling point at that altitude is 100°C. What is the percent error in the student's measurement? Show your work.”
Teacher Guide
Get the complete package:
- Answer keys for all questions
- Differentiation strategies
- Extension activities
- Printable student handouts
