Question

stimation and SubtractionJill watched 72 minutes of a movie that is 149 minuteslong. How much of the movie is left?What is the estimated number of minutes left if bothnumbers are rounded to the tens place?Click or use the arrow keys to select a box in the grid.Then, type a number in that box.is the actual number of minutes left?607080Reset

Answer 1

To find out how much of the movie is left, we need to subtract the amount of time Jill watched from the total length of the movie.

The total length of the movie is 149 minutes, and Jill watched 72 minutes:

\[ 149 - 72 = 77 \]

So, the actual number of minutes left is 77 minutes.

Now, we will round both numbers (149 and 72) to the nearest tens place for estimation:

• 149 rounds to 150.
• 72 rounds to 70.

Now, we can estimate the minutes left:

\[ 150 - 70 = 80 \]

So, the estimated number of minutes left is 80 minutes.

To summarize:

• Actual number of minutes left: 77 minutes
• Estimated number of minutes left: 80 minutes