Significant Figures Practice

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 whole number?

Back

For whole numbers, significant figures are determined by counting all non-zero digits and any zeros that are between them. Trailing zeros in a whole number without a decimal point are not considered significant.

Front

How do you determine the number of significant figures in a decimal number?

Back

In decimal numbers, all non-zero digits are significant, as well as any zeros that are between them or to the right of the last non-zero digit.

Front

What is the significance of leading zeros in a number?

Back

Leading zeros are not significant. They only serve to position the decimal point.

Front

How many significant figures does the number 100.00210 have?

Back

8 significant figures.

Front

How many significant figures does the number 0.00345 have?

Back

3 significant figures.

Front

How many significant figures does the number 0.00204 have?

Back

3 significant figures.

Front

How many significant figures does the number 10,000,000 have?

Back

1 significant figure (unless specified with a decimal point, e.g., 10,000,000. which would have 8 significant figures).

Front

How many significant figures does the number 8.08080 have?

Back

6 significant figures.

Front

What is the rule for counting significant figures in addition and subtraction?

Back

In addition and subtraction, the result should be reported to the least number of decimal places of any number in the operation.