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The best math program for middle school students
Showing posts with label
math word problems of the day
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Showing posts with label
math word problems of the day
.
Show all posts
Wednesday, June 24, 2015
Problem Solving Strategy: Complementary Counting
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#: How many three digit numbers contain the digit "9" at least once? Solution: For the "at least" questions: a lot of...
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Sunday, December 7, 2014
Problem Solving Strategies: Applications of the “Choose 2” method
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1. Example: How many diagonals can be drawn for a polygon with “n” sides? Method I: The number of diagonals in a polygon = n(n-3)/2, wher...
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