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 does the number 0.00345 have?

Back

3 significant figures.

Front

What is 98.907 rounded to 1 significant figure?

Back

1x10^2.

Front

Round 1289 to three significant figures.

Back

1.29x10^3.

Front

How many significant figures does the number 0.00204 have?

Back

3 significant figures.

Front

When adding or subtracting, how do you determine the number of significant figures in the result?

Back

The result should be rounded to the least number of decimal places of any number in the operation.

Front

Solve and give your answer with the correct number of significant figures: 24.28 + 12.5

Back

36.8.

Front

What is the rule for multiplying and dividing significant figures?

Back

The result should have the same number of significant figures as the number with the least significant figures used in the calculation.

Front

How many significant figures does the number 100.0 have?

Back

4 significant figures.