Reading the Odometer (Rounding Large Whole Numbers to the Nearest Ten with a Carry)

The video tutorial explains how an odometer works by counting miles and resetting digits. It then draws a parallel to rounding numbers to the nearest ten, especially when multiple digits need to be adjusted. Through examples, it demonstrates how to handle carries when rounding numbers like 72,999 and 199,995, emphasizing the process of adjusting digits and carrying over values. The lesson concludes with a summary of rounding multi-digit numbers when carries are involved.

What happens to the odometer when the rightmost digit reaches 9?

• It resets to 0 and the next digit decreases by 1.

• It resets to 0 and the next digit increases by 1.

• It continues to increase beyond 9.

• It stays at 9.

When the odometer reads 0099, what is the next reading?

• 0000

• 1000

• 0090

• 0100

What is the first step in rounding 72,999 to the nearest ten?

• Reset the ones digit to 0.

• Add one to the hundreds digit.

• Add one to the tens digit.

• Add one to the digit left of the tens place.

After rounding 72,999, what is the final rounded number?

• 72,900

• 73,000

• 72,000

• 73,100

In the example of rounding 199,995, what happens to the nines?

• They remain nines.

• They all become zeros.

• They are removed.

• They become ones.

What is the final result of rounding 199,995 to the nearest ten?

• 199,999

• 199,990

• 200,000

• 199,900

What key concept is learned in this lesson about rounding?

• How to divide numbers.

• How to round multi-digit numbers with carries.

• How to subtract numbers.

• How to multiply numbers.