Question

Use the following scenario to answer the question below:When the new book Units of Fire was released, Jonathan decided to read it inone sitting for his book report. He started at 11:00 a.m. on Saturday morningand read until 8:00 p.m. that night, for a total of 9 hours. For school, however,he needed to record the exact number of minutes he spent reading.What is the Order of Magnitude of the number of seconds he read?

Answer 1

He read for 9 hours, since each hour have 60 minutes this means that he read a total of

$9\cdot60=540$

minutes.

Now, since each minute have 60 seconds we have a total of:

$540\cdot60=32400$

seconds. We can write this as

$3.24\times10^4$

Therefore the order of magnitude of the seconds is four.