What is the missing number?

6 + 6 + 6 + 6 + 6 + 6 + 6 + 6 = ? x 3

[A solution to this problem will appear along with next month’s problem.]



Emma rides her bike for 20 minutes at an average rate of 45 kilometers per hour. She then travels twice as far as before for the rest of the trip, which takes another 30 minutes. What is her average rate of speed for the entire trip?

[ 54 ]



Megan has four discount coupons that she can use. Their values are $8, $13, $17, and $22. How many different amounts can she save by using one or more of these four coupons?

[ 14 ]

Visit our MOEMS Classic page Problem of the Month for detailed solutions

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For many additional problems we highly recommend the following books:

Math Olympiad Contest Problems for Elementary and Middle Schools by Dr. G. Lenchner
Math Olympiad Contest Problems Volume 2 edited by Richard Kalman
MOEMS® Contest Problems Volume 3
edited by Richard Kalman & Nicholas J. Restivo.
are sources of many such problems.

Creative Problem Solving in School Mathematics 2nd Edition by Dr. George Lenchner
can help you to teach solving these types of problems