Counting Sig Figs

Front

What are significant figures (sig figs)?

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 sig figs 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 sig figs are in the number 0.00794 mg?

Back

3 sig figs.

Front

How many sig figs are in the number 21.10 cm?

Back

4 sig figs.

Front

How many sig figs are in the number 2.5000 g?

Back

5 sig figs.

Front

How many sig figs are in the number 12 m?

Back

2 sig figs.

Front

How many sig figs are in the number 7,000,000 ppm?

Back

1 sig fig.

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 are leading zeros and how do they affect sig figs?

Back

Leading zeros are the zeros before the first non-zero digit and are not counted as significant figures.

Front

How do you handle zeros in whole numbers when counting sig figs?

Back

In whole numbers without a decimal point, trailing zeros are not considered significant.