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Overview
RAM Materials is the most complete website for Number Sense, Calculator Applications, Mathematics and Science. It features practice materials, workbooks, workshops, test writing for invitational meets, "Coach for Hire", and "Shortcuts on Demand". Visit and be mesmerized by the "Magic of Mathematics".
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Featured Shortcut Of The Day
The 6th pentagonal number is _________.
The first seven pentagonal numbers are 1, 5, 12, 22, 35, 51, and 70
Rule: n(3n - 1)/2
Solution: 6(3 x 6 - 1)/2 = 6(17)/2 = 3(17) = 51
(examples from UIL High School Shortcuts workbooks)
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