Significant Figures: Rules & Rounding Explained 📏

I. Significant Figure Rules: 00:12

Rule #1: All non-zero numbers are significant: 00:17
Rule #2: Zeros between two non-zero digits are significant: 00:59
Rule #3: Leading Zeros are not significant: 02:06
Rule #4: Trailing zeros to the right of the decimal are significant: 03:20
Rule #5: Trailing zeros in a whole number with the decimal shown are significant: 05:06
Rule #6: Trailing zeros in a whole number with no decimal shown are not significant: 06:09
Rule #7: For a number in scientific notation: N x 10^x, all digits comprising N are significant by the first 6 rules; "10" and "x" are not significant: 07:23
Exercises: 08:36

II. Rounding with given number of Significant Figures: 10:35

How to: 10:40
Examples: 11:12
More Examples: 12:28
Significant Figure with Bar on Top: 13:30
Exercises: 14:28

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