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 number?

Back

Count all non-zero digits, any zeros between them, and trailing zeros in a decimal number. Leading zeros are not counted.

Front

What is the significance of significant figures in calculations?

Back

Significant figures indicate the precision of measurements and calculations, ensuring that results reflect the accuracy of the data used.

Front

How many significant figures does the number 0.00456 have?

Back

3 significant figures (4, 5, and 6). Leading zeros are not counted.

Front

Round the number 0.00789 to 2 significant figures.

Back

0.0079

Front

What is 123.456 rounded to 4 significant figures?

Back

123.5

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

Calculate 15.2 + 3.78 and give the answer with the correct number of significant figures.

Back

19.0

Front

Round 0.004567 to 2 significant figures.

Back

0.0046

Front

What is the result of 100.0 - 0.045 with the correct significant figures?

Back

99.96