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 many significant figures are in the number 216 m?

Back

3 significant figures.

Front

How many significant figures are in the number 0.000008?

Back

1 significant figure.

Front

How many significant figures are in the number 0.012 km?

Back

2 significant figures.

Front

How many significant figures are in the number 1000 mL?

Back

1 significant figure (unless specified otherwise, such as with a decimal point).

Front

How many significant figures are in the number 100.000 cL?

Back

6 significant figures.

Front

What is the rule for counting significant figures in zeros?

Back

Leading zeros (zeros before the first non-zero digit) are not significant. Zeros between significant digits are significant. Trailing zeros in a decimal number are significant.

Front

How do you determine the number of significant figures in a measurement?

Back

Count all non-zero digits, any zeros between them, and trailing zeros in a decimal number.

Front

What is the significance of significant figures in scientific measurements?

Back

Significant figures indicate the precision of a measurement and help communicate the uncertainty in the data.

Front

How many significant figures are in the number 0.00450?

Back

3 significant figures.