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 measurement?

Back

Count all non-zero digits, any zeros between significant digits, and trailing zeros in a decimal number. Leading zeros are not counted.

Front

How many significant figures are in the measurement 0.00903 hm?

Back

3 significant figures.

Front

Round the number 890.6319 to 3 significant figures.

Back

891.

Front

How many significant figures are in the measurement 0.925 mol?

Back

3 significant figures.

Front

How many significant figures are in the measurement 9.340 kg?

Back

4 significant figures.

Front

What is the rule for rounding numbers when determining significant figures?

Back

If the digit to be dropped is less than 5, round down. If it is 5 or greater, round up.

Front

Calculate 84.93 ÷ 2.01 and give the answer in the correct number of significant figures.

Back

42.3.

Front

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

Back

Trailing zeros in a decimal number are considered significant because they indicate precision.

Front

How many significant figures are in the number 100.0?

Back

4 significant figures.