Lesson 8

Measurement Error (Part 1)

Let’s check how accurate our measurements are.

8.1: How Long Are These Pencils?

Two pencils and ruler. 
  1. Estimate the length of each pencil.
  2. How accurate are your estimates?
  3. For each estimate, what is the largest possible percent error?

8.2: How Long Are These Floor Boards?

A wood floor is made by laying multiple boards end to end. Each board is measured with a maximum percent error of 5%. What is the maximum percent error for the total length of the floor?