Significant Figures

Front

What are significant figures?

Back

Significant figures are the digits in a number that contribute to its precision, including all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal part.

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 are not presented with more certainty than the data allows.

Front

Round 1.23456 to three significant figures.

Back

1.23

Front

Round 0.004567 to two significant figures.

Back

0.0046

Front

How many significant figures are in the number 0.00780?

Back

Three significant figures (7, 8, and the trailing 0).

Front

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

Back

The result should be rounded to the least number of significant figures of any number in the operation.

Front

Round 123.456 to four significant figures.

Back

123.5

Front

How many significant figures are in the number 1001?

Back

Four significant figures.