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Math Competition Problems - Problem of the Week - 3

Updated: Oct 18, 2020

Fifteen children are playing hide and seek. One of them is the "seeker". After a while, seven children were still hiding. How many children have already been found?
Source - Math Kangaroo, Grades 3-4


Always summarize the question

15 children are playing hide and seek.

1 is seeking

So 14 were hiding in the beginning

Now only 7 are hiding

So 14-7=7 children have been found

Pitfall to watch out for:

Most people forget the seeker when doing the problem. They think 15 people are playing, and 7 are still hiding. So 8 children are found. (Might seem silly but I've seen this happen all the time)

Now try a similar question

I'm waiting for a rollercoaster ride in a theme park. I'm the 14th person in a queue. There are equal number of people before and after me. How many people are standing in the queue?

Post the answer to the problem in the comments section below.
Let's see how many get it right

As you know I'm an Online Math Tutor. I train kids for all elementary school math competitions. This is a problem my 3rd grader would be able to solve.

Would you like your child to be able to solve these kind of problems easily? To contact me click here. To know more about me and how I work click here.

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