Significant Figures in Numbers

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 many significant figures are in the number 100.3?

Back

4 significant figures.

Front

Round the number 0.010229 to four significant figures.

Back

0.01023.

Front

When adding or subtracting, how do you determine the number of significant figures in the result?

Back

The result should have the same number of decimal places as the measurement with the least number of decimal places.

Front

Solve and give your answer with the correct number of significant figures: 24.28 + 12.5

Back

36.8.

Front

When multiplying or dividing, how do you determine the number of significant figures in the result?

Back

The result should have the same number of significant figures as the measurement with the least number of significant figures.

Front

Solve and round using significant figure rules: 1.3562 mL / 14.32 g

Back

0.09471 mL/g.

Front

Round the number 1047.78 to three significant figures.

Back

1050.

Front

What is the significance of leading zeros in a number?

Back

Leading zeros are not significant; they only serve as placeholders.

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.