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| | Math Forum: Ask Dr. Math: FAQ |
 | | Tips for parents, teachers, and students for different ways of learning to multiply. |
 | | What are abundant, amicable, deficient, figurate, happy, narcissistic, palindromic, perfect, polygonal, proper divisors, semiperfect, sociable, square, tetrahedral, triangular, and weird numbers? |
 | | Addition, subtraction, multiplication, division; three levels of complexity and numbers from 1 to 999. |
| www.mathforum.org /dr.math/faq (587 words) |
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