Divisibility Rules! (2, 3, 5, 6, 9, 10)

Front

What is a divisibility rule?

Back

A rule that helps determine if one number can be divided by another without leaving a remainder.

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CCSS.3.OA.D.9

Front

A number is divisible by 2 if:

Back

It is an even number (ends in 0, 2, 4, 6, or 8).

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CCSS.2.OA.C.3

Front

A number is divisible by 3 if:

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The sum of its digits is divisible by 3.

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CCSS.3.OA.D.9

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A number is divisible by 5 if:

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It ends in 0 or 5.

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CCSS.4.OA.B.4

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A number is divisible by 6 if:

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It is divisible by both 2 and 3.

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CCSS.3.OA.D.9

Front

A number is divisible by 9 if:

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The sum of its digits is divisible by 9.

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CCSS.3.OA.D.9

Front

Is 825 divisible by 3?

Back

Yes, because 8 + 2 + 5 = 15, and 15 is divisible by 3.

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CCSS.4.OA.B.4

Front

Which of the following is an even number? 1, 9, 4, 5

Back

4 is an even number.

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CCSS.2.OA.C.3

Front

Is 816 divisible by 3?

Back

Yes, because 8 + 1 + 6 = 15, and 15 is divisible by 3.

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CCSS.4.OA.B.4

Front

A number is divisible by 10 if:

Back

It ends in 0.

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CCSS.3.OA.D.9