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Divisibility Rules
Question | Answer |
---|---|
A number is DIVISIBLE BY 2 if... | The ones digit is an even number (0,2,4,6,8) |
A number is DIVISIBLE BY 3 if... | The SUM of its digits is divisible by 3 |
A number is DIVISIBLE BY 4 if... | The LAST TWO digits are divisible by 4 |
A number is DIVISIBLE BY 5 if... | The ONES DIGIT is a 0 or 5 |
A number is DIVISIBLE BY 6 if... | 1.) Its ones digit is EVEN (0,2,4,6,8) AND 2.) The SUM of its digits is divisible by 3 |
A number is DIVISIBLE BY 7 if... | For this number, you will just need to try by hand or calculator |
A number is DIVISIBLE BY 8 if... | The numbers LAST THREE digits is divisible by 8 |
A number is DIVISIBLE BY 9 if... | The SUM of its digits is divisible by 9 |
A number is DIVISIBLE BY 10 if... | Its ONES digit is a 0 |