From an average student to a
top 10%
student in math!
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Challenge of the Month
1. How many squares and triangles are there in the following drawing?
(1st grade and up)
2. In
the figure below, the circle has a radius of R. Two sides of the right
triangle's length is R. One corner of the triangle is in the center of the
circle. What is the area shaded with red lines?
(5th grade and up)
3.
How many rectangles are in
the following figure?
(5th grade and up)
Grade 
1 
2 
3 
4 
5 
6 
7 
Number of math
problems on this site 
75 
72 
70 
77 
76 
82 
82 
