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 them, and trailing zeros in a decimal number. Leading zeros are not counted.

Front

What is the rule for rounding to significant figures?

Back

If the digit to the right of the last significant figure is less than 5, round down. If it is 5 or greater, round up.

Front

How many significant figures are in the number 0.00456?

Back

There are three significant figures: 4, 5, and 6.

Front

What is the result of 1.2 + 3.45 rounded to the correct number of significant figures?

Back

The result is 4.7, as the answer should be rounded to one decimal place.

Front

When multiplying or dividing, how do you determine the number of significant figures in the result?

Back

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

Front

Calculate 2.5 m x 3.42 m and give the answer with the correct number of significant figures.

Back

The answer is 8.5 m².

Front

What is 0.007890 rounded to three significant figures?

Back

The rounded number is 0.00789.

Front

Perform the calculation: 5.67 - 2.1 and round to the correct number of significant figures.

Back

The answer is 3.6.

Front

What is the result of 100.0 / 4.00 rounded to the correct number of significant figures?

Back

The result is 25.0.