Reading a Meterstick

Known + Estimated Digits

Learning Check

So how many sig figs are there in a given measurement?

How to Determine Significant Figures in a

Problem

Rule #1

Rule #2 – Sandwiched 0’s

Rule #3 – Leading 0’s

Rule #4 – Trailing 0’s with DP

Rule #5 – Trailing 0’s without DP

Examples: