Calculations Using Significant Figures
When multiplying and dividing, limit and round to the least number of significant figures
in any of the factors.
Example 1: 23.0 cm x 432 cm x 19 cm = 188,784 cm
The answer is expressed as 190,000 cm since 19 cm has only two
significant figures
When adding and subtracting, limit and round your answer to the least number of
decimal places in any of the numbers that make up your answer.
Example 2: 123.25 ml + 46.0 mL + 86,257 ml = 255.507 mL
The answer is expressed as 255.5 mL since 45.0 mL has only one
decimal place
Perform each operation, expressing the answer in the correct number of significant figures.
1.35 mx 2.467 m =
2
1.035 m = 42 m =
3
1201 ml + 35.2 ml + 6 mL