Wk 1: Measurements & SigFigs

Front

What are significant figures?

Back

Significant figures are the digits in a number that contribute to its precision. This includes all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal portion.

Front

How do you determine the number of significant figures in a measurement?

Back

Count all non-zero digits, any zeros between them, and trailing zeros in a decimal number. Leading zeros are not counted.

Front

What is the rule for addition and subtraction with significant figures?

Back

The result should be rounded to the least number of decimal places of any number in the operation.

Front

What is the rule for multiplication and division with significant figures?

Back

The result should be rounded to the least number of significant figures of any number in the operation.

Front

Round 0.00456 to two significant figures.

Back

0.0046

Front

Round 12345 to three significant figures.

Back

12300

Front

What is the proper way to report the result of 17.34 / 3.45?

Back

5.03 because the 3.45 has the fewest significant figures.

Front

Calculate 1145.678 + 4.56 + 623.9789 + 78.1 using significant figures.

Back

1852.3

Front

What is the volume of a liquid measured at 8.0 mL?

Back

The volume is reported as 8 mL, with one significant figure after the decimal.

Front

What is the temperature shown if it reads 14 ⁰F?

Back

The temperature is 14 ⁰F, with two significant figures.