Rounding and Estimation Techniques

This video tutorial covers the estimation of products and quotients using whole numbers by rounding. It begins with an introduction to the concept of estimation and a review of rounding whole numbers. The video then provides examples of estimating products and quotients by rounding to the nearest place value. Finally, it demonstrates a practical application of estimation in a real-world scenario, such as calculating the cost of purchasing light bulbs.

What is the primary goal of estimating multiplication and division problems using whole numbers?

• To simplify calculations by rounding

• To find the exact product or quotient

• To increase the complexity of problems

• To avoid using whole numbers

When rounding whole numbers, what is the first step?

• Increase the roundoff place digit by one

• Identify the roundoff place digit

• Replace all digits with zeros

• Identify the digit to the right of the roundoff place

If the digit to the right of the roundoff place is less than five, what should you do?

• Round up

• Round down

• Leave the roundoff place digit unchanged

• Replace it with a zero

In the example of rounding 3,739 to the nearest hundreds, what is the result?

• 3,900

• 3,750

• 3,800

• 3,700

When estimating the product of 348 and 18 by rounding to the nearest tens, what are the rounded numbers?

• 350 and 10

• 300 and 20

• 350 and 20

• 340 and 10

What is the estimated product of 348 and 18 after rounding to the nearest tens?

• 6,000

• 7,000

• 7,500

• 8,000

When rounding to the nearest thousands, what is the rounded value of 14,368?

• 13,000

• 14,500

• 15,000

• 14,000

In the example of estimating the product of 14,368 and 6,789 by rounding to the nearest thousands, what is the estimated product?

• 90 million

• 98 million

• 95 million

• 100 million

When estimating division problems by rounding to the nearest tens, what is the rounded value of 826?

• 810

• 800

• 830

• 820

In the division example, what is the estimated quotient of 826 divided by 20 after rounding?

• 41

• 40

• 42

• 39