mathcounts notes
The best math program for middle school students
Saturday, June 16, 2012
Mathcounts strategies: Some sums
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The following sequences are all arithmetic sequences and for any arithmetic sequences, the sum is always average times the terms (how ma...
Monday, June 11, 2012
Painted Cube Problems: Beginning Level
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Please refrain yourself from checking the answers too soon. Use Lego blocks, unit cubes, or Rubik's cubes to help you think. If you are...
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