The coordinates of the vertices of quadrilateral ABCD are:
A(-4,-3), B(4,2), C(2,-2), and D(6,-5).
What is the area of quadrilateral ABCD?

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


The average (mean) of three numbers is 5/6. Two of the three numbers are 1/2 and 2/3. What is the third number in lowest terms?

[ 4/3 or 1 1/3 ]


A large cube 2 meters along each edge is cut into small cubes that are 2 centimeters along each edge. How many small cubes are there?

[ 1,000,000 or 1 million]

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