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 0.002040 have?

Back

4 significant figures.

Front

What is the rule for addition and subtraction with significant figures?

Back

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

Front

What is the rule for multiplication and division with significant figures?

Back

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

Front

Solve: 98.7°C - 97.25°C. Round using SigFig math rules.

Back

1.5°C.

Front

Calculate: 0.020 cm x 50 cm x 11.1 cm. Give your answer with the correct number of significant figures.

Back

10 cm³.

Front

Solve: 1.3562 mL / 14.32 g. Round using SigFig math rules.

Back

0.09471 mL/g.

Front

How many significant figures are in the number 27000000?

Back

2 significant figures.

Front

What is a leading zero?

Back

Leading zeros are zeros that precede all non-zero digits in a number and are not counted as significant figures.