Significant Figures Worksheet

Which statement best defines significant figures and their importance in scientific measurements?

• The digits in a number used to show its place value and help perform long division.

• The digits in a measurement that reflect the precision of the instrument and should be preserved to communicate measurement reliability.

• The digits in any whole number that determine whether rounding is needed for addition problems.

• The digits in a calculation that must always include all zeros regardless of context.

• 3

• 4

• 5

• 6

• 3

• 4

• 5

• 6

• TRUE

• False

Which of the following numbers have three significant figures?

• 1

• 2

• 3

• 4

• 0

• 1

• 2

• 3

Zeros between non-zero digits are always significant.

• TRUE

• False

Which operations require you to consider the number of significant figures in the final answer?

• Addition

• Subtraction

• Multiplication

• Division

What is the rule for determining the result when performing addition or subtraction with significant figures?

• Round the result to the least number of decimal places among the original measurements.

• Round the result to the least number of significant figures among the original measurements.

• Round the result to the greatest number of decimal places among the original measurements.

• Do not round; keep all digits from each measurement.