This video lesson explains the concept of significant figures and the rules that apply when reporting them in measurements or calculations. The video covers different types of significant figures, rules for rounding them off, and how to apply significant figures in mathematical operations. The video ends with an assignment to practice applying the rules for significant figures.
1. The lesson is about significant figures.
2. The rules for significant figures include non-zero digits being significant.
3. Leading zeros to the left of a non-zero digit are not significant.
4. Trading zeros for a whole number with a decimal point are significant.
5. Zeros on the right of the measurement's last zero digit are significant.
6. Rounding off of numbers in significant figures involves rounding up if the last digit is five or more.
7. Various examples are given to illustrate significant figures and rounding off.
8. The next lesson will cover additional operations with significant figures.