Question

Jill watched 72 minutes of a movie that is 149 minutes long.

What is the estimated number of minutes left if both numbers are rounded to the tens place?

What is the actual number of minutes left?

Answer 1

To estimate the number of minutes left, we first round both the watched minutes and the total movie length to the nearest tens.

- For the watched minutes (72), rounding to the nearest tens gives us 70.
- For the total movie length (149), rounding to the nearest tens gives us 150.

Now we can estimate the minutes left:

\[
\text{Estimated minutes left} = \text{Rounded total movie length} - \text{Rounded watched minutes} = 150 - 70 = 80
\]

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

Now, for the actual number of minutes left:

\[
\text{Actual minutes left} = \text{Total movie length} - \text{Watched minutes} = 149 - 72 = 77
\]

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

To summarize:
- Estimated minutes left: 80 minutes
- Actual minutes left: 77 minutes