Unit 2: Significant Figures

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 1740200?

Back

5 significant figures.

Front

How many significant figures are in the number 0.998005?

Back

6 significant figures.

Front

When multiplying numbers, 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

Calculate 1.23 m x 0.89 m and give your answer with the correct number of significant figures.

Back

1.1 m².

Front

When subtracting numbers, 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

Calculate 345.009 g - 23.00 g and give your answer with the correct number of significant figures.

Back

322.01 g.

Front

Calculate 7.987 m - 0.54 m and give your answer with the correct number of significant figures.

Back

7.45 m.

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.

Front

What is the significance of leading zeros in a number?

Back

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