Reasonableness of Answers Using Rounding

The video tutorial explains the importance of estimation in everyday situations like shopping and time management. It uses a math problem involving Devon to demonstrate how to check the reasonableness of an answer through rounding. The process of rounding numbers to the nearest hundred is detailed, and the tutorial concludes by verifying Devon's corrected answer, emphasizing the usefulness of estimation in math.

Why is estimation useful in everyday life?

• It improves your cooking skills.

• It helps in spending money wisely.

• It helps you learn new languages.

• It makes you better at sports.

What is the first step in rounding a number to the nearest hundred?

• Look at the units place.

• Look at the thousands place.

• Look at the hundreds place.

• Look at the tens place.

When rounding 428 to the nearest hundred, what is the result?

• 500

• 400

• 450

• 300

What is the estimated sum of 428 and 291 after rounding?

• 800

• 600

• 700

• 900

How does the actual sum of 428 and 291 compare to the estimated sum?

• The actual sum is exactly the same as the estimated sum.

• The actual sum is close to the estimated sum.

• The actual sum is much lower.

• The actual sum is much higher.