Ms. Garcia Math
A whole number is divisible …
by another if
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One whole number is divisible by another if, after dividing, the remainder is zero.
by 2 if
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A number is divisible by 2 if the last digit is 0, 2, 4, 6 or 8.
3624 is divisible by 2 since the last digit is even (4).
by 3 if
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A number is divisible by 3 if the sum of the digits is divisible by 3.
3264 is divisible by 3 since the sum of the digits is 15 (3+2+6+4=15), and 15 is divisible by 3.
by 4 if
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The last 2 digits are divisible by 4
3264 is divisible by 4 since 64 is divisible by 4.
by 5 if
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The last digit is 0 or 5
2480 is divisible by 5 since the last digit is 0.
by 6 if
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A number is divisible by 6 if it is divisible by 2 AND it is divisible by 3.
3624 is divisible by 6 since it is divisible by 2 AND it is divisible by 3.
by 8 if
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A number is divisible by 8 if the number formed by the last three digits is divisible by 8.
3 264 is divisible by 8 since 264 is divisible by 8.
by 9 if
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A number is divisible by 9 if the sum of the digits is divisible by 9.
234567 is divisible by 9 since the sum of the digits is 27 (2+3+4+5+6+7=27), and 27 is divisible by 9.
by 10 if
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A number is divisible by 10 if the last digit is 0.
12450 is divisible by 10 since the last digit is 0.
by 12 if
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The number is divisible by both 3 and 4
3624 is divisible by 12 since it is divisible by 3 AND it is divisible by 4.