Divisibility Rules.

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Presentation transcript:

Divisibility Rules

What is Divisibility? A number is divisible by another number when after dividing there is NO remainder.

Divisibility Rules Can Help You! Do you know how to tell if a number is divisible by 2? By 3? How about 5 or 10? Or even 6 or 9. Divisibility Rules help you to use shortcuts to determine whether a number is divisible by another number.

356,821 Can you tell just by looking at this number if it is divisible by 2? By 3 or 9? By 5 or 10? How about 6?

Divisibility Rules help you learn SHORTCUTS that help you determine whether a number is divisible by another with no remainder.

Popular Divisibility Rules A number is divisible by 2 if the number is even A number is divisible by 5 if it ends in a 0 or 5 A number is divisible by 10 if it ends in 0 A number is divisible by 3 if the sum of its digits is divisible by 3 A number is divisible by 9 if the sum of its digits is divisible by 9 A number is divisible by 6 if the number is divisible by both 2 and 3

To learn more about these and other divisibility rules visit Dr To learn more about these and other divisibility rules visit Dr. Math @ The Math Forum