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

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 0.00456?

Back

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

Front

How many significant figures are in the number 100.0?

Back

4 significant figures (1, 0, 0, and the trailing zero after the decimal point).

Front

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

Back

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

Front

True or False: The number 0.007890 has 5 significant figures.

Back

True.

Front

What should you do if you are unsure about the number of significant figures in a measurement?

Back

Consult your teacher or a reliable resource for clarification.

Front

How do you round a number to a specific number of significant figures?

Back

Look at the digit immediately after the last significant figure you want to keep. If it's 5 or greater, round up; if it's less than 5, leave it as is.