APRIL's PROBLEM 
The
coordinates of the vertices of quadrilateral ABCD are: 
[A
solution to this problem will appear along with next month’s problem.
MARCH'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
FEBRUARY's PROBLEM 
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

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many additional problems we highly recommend the following books: 