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

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 are in the number 4000?

Back

1 significant figure (if no decimal point is present). If written as 4000., it has 4 significant figures.

Front

What is 98.907 rounded to 1 significant figure?

Back

100

Front

How many significant figures does the number 0.002040 have?

Back

4 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

Solve: 103-cm x 11-cm. Round using SigFig math rules.

Back

1100-cm²

Front

What is 78.5 rounded to one significant figure?

Back

80

Front

What is the rule for rounding numbers to significant figures?

Back

If the digit to the right of the last significant figure is 5 or greater, round up. If it is less than 5, round down.

Front

How many significant figures are in the number 0.00456?

Back

3 significant figures.