Sig Figs & Math Operations

Rounding rules:

• Round starting from the first digit to the right of the uncertain digit.
• If the digit to be dropped is less than 5 leave the digit before it unchanged (round down)

Example: round 6.784998 to 3 sig. figs.:

6.784998

rounds to 6.78

Numbers to be kept

Look at only the very next number!

Numbers to drop