Significant Figures and Rounding Worksheet

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 number?

Back

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

Front

How many significant figures are in the number 1.008?

Back

4 sig figs

Front

How many significant figures are in the number 246.32?

Back

5 sig figs

Front

How many significant figures are in the number 100.00?

Back

5 sig figs

Front

How many significant figures are in the number 0.00340?

Back

3 sig figs

Front

What is the rule for rounding when adding numbers with different significant figures?

Back

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

Front

What is the sum of 658.0, 23.5478, and 1345.29 rounded to the correct number of significant figures?

Back

2026.8

Front

How many significant figures are in the number 0.00056?

Back

2 sig figs

Front

What is the significance of trailing zeros in a decimal number?

Back

Trailing zeros in a decimal number are significant because they indicate precision.