Understanding Significant Figures

What is the purpose of identifying significant figures in a number?

• To determine the precision of a measurement

• To find the average of a set of numbers

• To convert numbers into scientific notation

• To round numbers to the nearest whole number

In the number 500, which digit is considered the most significant figure?

• None

• 0

• Both 0s

• 5

How many significant figures are there in the number 500 when a decimal point is added?

• One

• Two

• Three

• Four

What happens to the count of significant figures when a decimal point is added to a number?

• It decreases

• It remains the same

• It becomes zero

• It increases

In a number without a decimal point, which digit is the least significant figure?

• The farthest left non-zero digit

• The middle digit

• The farthest right non-zero digit

• Any zero

Which rule applies when there is no decimal point in a number?

• The farthest right non-zero digit is the least significant

• The farthest left digit is the least significant

• All zeros are significant

• The middle digit is the least significant

When a decimal point is present, which digit is considered the least significant figure?

• The farthest left non-zero digit

• The farthest right digit, even if it's zero

• The first zero

• The middle digit

How many significant figures are in the number 80.040?

• Four

• Five

• Three

• Two

In scientific notation, which part of the number contributes to the count of significant figures?

• Both the coefficient and the power of 10

• The coefficient

• Neither

• The power of 10

What is the number of significant figures in the coefficient of a scientific notation?

• One

• Depends on the number

• Two

• Three