Ms. Walsh's 6th Grade Math

Course 1 p.10-13; Course 2 p. 554; Pre-Algebra 4.1 p.148-152

Knowing these tricks for deciding whether a number can be divided by another number (factor) or not will help you when we do factoring and need to find the least common multiple (LCM) and greatest common factor (GCF) of two or more numbers.

Divisibility Rules and Patterns:
View this slideshow for help and examples of how to use divisibility rules.

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Divide any number by 9 with the speed of lightning using this Indian method:
Speed Division by 9

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