mathcounts notes

The following notes are from Vinjai, a student I met online. He graciously shares and offers the tips here on how to tackle those harde...

2012 Mathcounts State Sprint #30: In rectangle ABCD, shown here, point M is the midpoint of side BC, and point N lies on CD such that DN:NC ...

You can now download and discuss with your friends this year's school and chapter problems. Here is the link to the official Mathcounts...

Question #1 : The area ratio of two equilateral triangles are 4 to 9 and the sum of their perimeter is 30 √  3 . What is the area of the a...

Check out Mathcounts here, the best competition math program for middle school students. Download this year's Mathcounts handbook her...

Folding paper questions are not too bad so here are two examples:   Question #1:  The two side lengths of rectangle ABCD is "a"...

Question: \(\Delta\) ABC is a right triangle and a, b, c are three sides, c being the hypotenuse. What is a. the radius of the inscribed...

Please check out Mathcounts , the best middle school competition program up to the national level. #1: 2006 Mathcounts state : My three-d...

Proof :  2y = 2x + b (exterior angle = the sum of the other two interior angles) --- equation I y = x + a (same reasoning as above) -...

#24 2001 Mathcounts Sate Sprint Round: The number 4 can be written as a sum of one or more natural numbers in exactly five ways: 4, 3+1, 2 ...

Check out Mathcounts here, the best competition math program for middle school students. Download this year's Mathcounts handbook her...