Understanding Approximation and Estimation

What is the primary purpose of approximation?

• To determine the precise measurement

• To calculate the exact number of items

• To find a value that is nearly correct

• To find an exact value

When rounding the number 7,298 to the nearest hundred, what is the result?

• 7,200

• 7,000

• 7,300

• 7,400

Which of the following numbers has two significant figures?

• 709

• 65

• 600

• 0.009

What is the rule for determining significant figures in a number with a decimal point?

• Only non-zero digits are significant

• Trailing zeros are significant if they are after a decimal point

• Only leading zeros are significant

• All zeros are significant

How many significant figures are in the number 709?

• Four

• One

• Two

• Three