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 significant digits, and trailing zeros in a decimal number. Leading zeros are not counted.

Front

Calculate 923 g ÷ 20312 cm³ and give your answer with the correct number of significant figures.

Back

0.0454 g/cm³

Front

How many significant figures are in the number 27000000?

Back

2

Front

Calculate 1.23 m x 0.89 m and give your answer with the correct number of significant figures.

Back

1.1 m²

Front

Which of the following has one significant figure? 100 cm, 0.0001 cm, 2 cm, 2.00 cm

Back

2.00 cm has more than one significant figure.

Front

How many significant figures are in the number 450 m?

Back

2

Front

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

Back

The result should be reported with the same number of decimal places as the measurement with the least number of decimal places.

Front

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

Back

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

Front

What is an example of a number with 3 significant figures?

Back

123.45 has 5 significant figures, but 123 has 3 significant figures.