Estimation and Rounding Quiz

Why might it be beneficial to estimate an answer instead of finding the exact one?

• It requires no mathematical skills.

• It is more accurate than exact calculations.

• It makes calculations faster and easier.

• It always gives the exact answer.

What is the rounded sum of 39 and 22 when rounded to the nearest ten?

• 60

• 80

• 50

• 70

In the example, what mistake did the cashier make?

• Added tax twice

• Forgot to apply a discount

• Rang up the video game twice

• Charged for an extra toy

How did Cody realize there was a mistake in the total cost?

• He used a calculator.

• He estimated the cost using rounding.

• He asked the cashier to recount.

• He checked the receipt.

What lesson can be learned from Cody's experience at the toy store?

• Exact calculations are unnecessary.

• Always trust the cashier's calculation.

• Estimation can help identify errors.

• Never round numbers when estimating.