Sig Fig math practice

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 measurement?

Back

To determine the number of significant figures in a measurement, count all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal portion. Leading zeros are not counted.

Front

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

Back

In multiplication and division, the result should have the same number of significant figures as the measurement with the least number of significant figures.

Front

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

Back

In addition and subtraction, the result should be rounded to the least precise decimal place of any number in the operation.

Front

Calculate 0.0045 x 1000 and give the answer with the correct number of significant figures.

Back

4.5 (3 significant figures) because the number with the least significant figures is 0.0045.

Front

If a measurement is recorded as 0.03040 m, how many significant figures does it have?

Back

It has 4 significant figures.

Front

What is the significance of trailing zeros in a decimal number?

Back

Trailing zeros in a decimal number are significant because they indicate precision. For example, 2.300 has 4 significant figures.

Front

How do you round the number 5.678 to 3 significant figures?

Back

5.68 (the last digit is rounded up because the next digit is 7).

Front

What is the density formula?

Back

Density is calculated using the formula: Density = Mass / Volume.

Front

If an object has a mass of 15.0 grams and a volume of 3.0 mL, what is its density with the correct significant figures?

Back

Density = 5.0 g/mL (2 significant figures, based on the volume measurement).