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if the number is a 2 or more diget number, you add up all of the numbers in the number and when you have the sum, if the sum is divisible by 3 , the whole number is divisible by three

EX.

123=6, 6 is divisible by 3 so 123 is divisible by three

447=15 is divisible by 3 so 447 is divisible by 3

989=26 is *NOT* divisible by 3 so 989 is not divisible by three

this truly does work for every single number

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Q: How would you reconise a multiple of three?
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What method can you use to confirm that 6 is a factor of 208?

We can tell by applying the divisibility rules that 6 is not a factor of 208. For 208 to be a multiple of 6, it would have to be even and a multiple of three. Since the digits of 208 don't total a multiple of three, 208 is not a multiple of three and can't be a multiple of 6.


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Three is not a multiple of six. Six is a multiple of three. And three is a factor of six.


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it will not since it is not a multiple of 3. 99 is a multiple of three so the next multiple would be 102.


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Is 356 a multiple of 6?

To be a multiple of 6 a number must be even and a multiple of 3.356 is not a multiple of three. The short cut to that is if the digits add up to a multiple of three then the original number is a multiple of 3.


What are the three first common multiples of 4 5 and 10?

The first common multiple of 4, 5, and 10 is their least common multiple (LCM), which is the smallest number that is a multiple of all three numbers. The LCM of 4, 5, and 10 is 20. The next common multiple would be the next multiple of 20, which is 40. The third common multiple would be the next multiple of 20, which is 60.


Is 28 a multiple of 3?

No, 28 could not be a multiple of 3.No. 28 divided by three is not a whole number, so it is not a multiple of three.


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How do we know if a number is divisible by 3?

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