Sig Figs Review

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 whole number without a decimal point?

Back

Count all non-zero digits. Trailing zeros are not counted unless there is a decimal point.

Front

How do you determine the number of sig figs in a whole number with a decimal point?

Back

Count all non-zero digits, any zeros between them, and trailing zeros after the decimal point.

Front

Determine the number of sig figs in 3,000 mm.

Back

1 sig fig.

Front

Determine the number of sig figs in 72,100 g.

Back

3 sig figs.

Front

How do you round a number to the correct number of sig figs?

Back

Identify the last significant figure and round based on the digit immediately following it.

Front

Calculate and round the answer to the correct number of sig figs: 4.627 / 0.00371.

Back

1250.

Front

Determine the number of sig figs in 0.036653 m.

Back

5 sig figs.

Front

Determine the number of sig figs in 25.03 L.

Back

4 sig figs.

Front

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

Back

Leading zeros are not counted as significant figures.