I know they're learning how to round numbers, but this question just seemed odd to me. If you already know exactly how many pages Timothy read, why would you need to know "about how many" he read? Who cares?
"Mom, are we doing anything tonight?" "Mom, I'm still hungry." "Mom, when I grow up I want to be the ninja of fighting and stealth." "Mom, what if the whole world is just a giant pop-up book?" "Mom, why do we don't have any flying stuff?"