Significant Figures in Calculations Quiz

Why are not all digits from a calculator output considered valid in significant figures?

• Because significant figures are not important.

• Because the number of valid digits is limited by the measurement's precision.

• Because calculators are often faulty.

• Because calculators add extra digits for fun.

When adding or subtracting, how do you determine the number of decimal places in the result?

• By the number with the most decimal places.

• By the average number of decimal places.

• By the number with the fewest decimal places.

• By the total number of decimal places in all numbers.

In multiplication and division, what determines the number of significant figures in the result?

• The average number of significant figures.

• The total number of significant figures in all numbers.

• The number with the most significant figures.

• The number with the fewest significant figures.

In the example 6.57 - 2.3, how many decimal places should the result have?

• Two decimal places.

• No decimal places.

• One decimal place.

• Three decimal places.

What is the correct number of decimal places for the sum of 6.7 and 122.2?

• Three decimal places.

• Four decimal places.

• Two decimal places.

• One decimal place.

For the operation 85.0 x 0.0011, how many significant figures should the result have?

• Four significant figures.

• One significant figure.

• Two significant figures.

• Three significant figures.

In the multiplication problem 5.0 x 10^5 x 4.0 x 10^8, how many significant figures should the result have?

• Three significant figures.

• Two significant figures.

• One significant figure.

• Four significant figures.

How do you handle significant figures in a multi-step problem involving both addition and division?

• Use the rules for division only.

• Use the rules for addition only.

• Ignore significant figures in multi-step problems.

• Apply the rules for each operation separately.

What is the final answer for the division of 4.05 by 10.64, considering significant figures?

• 0.383

• 0.381

• 0.380

• 0.382

Why is it important to include a decimal point in the number 20 when indicating significant figures?

• To make the number look more precise.

• To indicate that it has two significant figures.

• To make it easier to read.

• To confuse the reader.