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

Back

To determine significant figures, count all non-zero digits, any zeros between them, and trailing zeros in a decimal number. Leading zeros are not counted.

Front

How many significant figures does the number 0.00345 have?

Back

3

Front

How many significant figures does the number 0.00204 have?

Back

3

Front

How many significant figures does the number 348,012,520 have?

Back

8

Front

What is the rule for rounding to significant figures?

Back

When rounding to significant figures, if the digit to the right of the last significant figure is 5 or greater, round up. If it is less than 5, do not round up.

Front

What is 098.371 rounded to 3 significant figures?

Back

98.4

Front

Are trailing zeros in a whole number significant?

Back

Trailing zeros in a whole number without a decimal point are not considered significant unless specified by a bar or decimal.

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 100.0 have?

Back

4