Significant Figures (1.1)
An introduction to significant figures. Discusses how to round for multiplication and division.
Significant Figures (1.2)
Introduction to significant figures. Discusses basics of multiplication and division.
Significant Figures and Zeros (1.3)
How do you know if a zero is significant?
Significant Zeros Practice Problems (1.4)
Lots of practice problems to work on significant zeros.
Multiplication and Division with Significant Zeros (1.5)
Now that we know when zeros are significant or not, we'll do multiplication and division and rounding with numbers that have zeros.
Add and Subtract with Significant Figures (1.6)
How to do addition and subtraction with significant figures.
Scientific Notation and Significant Figures (1.7)
How to round with significant figures when you're doing scientific notation problems.
Scientific Notation and Significant Zeros (1.8)
Advanced: how to use significant figures to deal with tricky zero problems.
Using Significant Figures Practice Problems (1.9)
Measurement vs. counting and how to round: a bunch of practice problems to work on using significant figures with units.
Nota: Algunos problemas incluyen datos inventados ("Una masa de 2 kg cae desde 10 m de altura...") que, aún tratándose de magnitudes medibles, no informan sobre el número de cifras significativas.
Otras veces se proporcionan datos redondeados,(g=10 m/s2), sin querer indicar que el resultado deba ser expresado con una cifra significativa.
Lo explicado aquí no puede aplicarse y optaremos por expresar el resultado con un número razonable de cifras significativas, como tres.
