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Divisibility Rules For 2, 3, 5, 9, and 10

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**A Number is Divisible by 2 if:**

The last digit in the number is an even number. For Example: 68 132 456

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**A Number is Divisible by 3 if:**

The sum of the digits can be divided by 3. For Example: 30…. 3+0=3….3/3 = 1 (no remainder) 108…1+0+8=9…9/3 = 3 (no remainder) 417…4+1+7=12…12/3 = 4 (no remainder)

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**A Number is Divisible by 5 if:**

The last digit of a number is a 5 or 0. For Example: 65 240 485

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**A Number is Divisible by 9 if:**

The sum of the digits are divisible by 9. For Example: 72…7=2=9…9/9=1 (no remainder) 306…3+0+6=9…9/9=1 (no remainder) 774…7+7+4=18…18/9=2 (no remainder)

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**A Number is Divisible by 10 if:**

The number ends in a 0. For Example: 90 280 35,867,309,281,642,570

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Your Turn: 36 315 240 1,004 990 402

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Divisibility and Mental Math. Vocabulary A number is divisible by another number if it can be divided into and result in a remainder of 0. 24 is divisible.

Divisibility and Mental Math. Vocabulary A number is divisible by another number if it can be divided into and result in a remainder of 0. 24 is divisible.

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