MA, Stanford University
Teaching in the San Francisco Bay Area
Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts
We will use the divisibility shortcut rules to help us determine if the first number given is divisible by the second. It is divisible by 2 if it is even, divisible by 5 if it ends in 5 or 0, and divisible by 10 if it ends in zero. It is divisible by 3 if the sum of the digits is divisible by three, and divisible by 9 if the sum of the digits is divisible by nine. It is divisible by 6 if it is divisible by both 2 and 3.
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