Accuracy, Precision, and Significant Figures

Round the measurement 0.424 to two significant figures.

0.42

Multiply 2.334 cm and 0.320 cm. (Remember to consider significant figures.

0.747 cm2

Which of the following has 3 significant figures? Select all that apply.

123 12.3 1.23×104

Stephanie added 2.334 mL of water to a beaker, and she then added another 0.31 mL of water to the same beaker. How much water was in Stephanie's beaker? (Remember to consider significant figures in your answer.)

2.64

Complete the following operation to the correct number of significant figures: 85.2÷25.90348=

3.29

Complete the following operation to the correct number of significant figures: 34.85−2.415=

32.44

450m / 110 s equals which of the following values to the correct number of significant figures?

4.1m\s

4.5×11.41=

51

A set of measurements was taken 3 times. Determine which of the following sets is both accurate and precise if the accepted value is 68.1 mL.

68.1 mL, 68.0 mL, 68.2 mL

If the accepted value for a measurement is 60.3 mL, which of the following set of measurements is precise but not accurate?

76.5 mL, 76.4 mL, 76.3 mL

Which of the following is not a rule regarding significant figures?

All nonzero digits can be ignored.

When adding numbers, the sum will have:

As many decimal places as the number with fewest decimal places.

All of the following are rules for rounding numbers when considering significant figures EXCEPT:

For multiplication and division, round the result to the same number of digits as the number with the most number of significant figures.

The number of significant figures in a value is a display of the _________ of a measurement.

Precision

Which of the following is a rule of significant figures in calculations?

Round down if the digit to be dropped is less than 5.

0.738×0.28 is 0.20664 but is rounded to 0.21. Which rule or rules are applied to this calculation?

Round the result to the same number of significant figures as the value with the least number of significant figures & Round up if the digit to be dropped is 5 or greater.

When reading a measurement from an analog instrument like a ruler or a mercury thermometer, how should you determine the number of significant figures to record?

The least significant figure should be estimated by reading between the smallest markings on the instrument.

Which value is equal to exactly 10?

a bunch of 10 tomatoes you buy from the store

When dividing one number by another, the quotient will have:

as many significant figures as the number with fewer significant figures

A measurement is ________ if it yields similar results when repeated.

precise