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If you add up all the digits in a number and the sum is a multiple of 9 then the original number is also a multiple of 9. For example; 12,167,314,839,018

1+2+1+6+7+3+1+4+8+3+9+0+1+8 = 54 = 6 x 9 therefore the original number is a multiple of 9, actually 1,351,923,871,002 x 9

Use a calculator and try to divide the number by 9. If 9 divides into the number a whole number of times then the number is a multiple of 9.

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Q: How do you know if a number is a multiple of 9?

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You know that it is a multiple of 9 if it divides into 9 equally.

I think you might mean "multiple." If the sum of a number's digits is a multiple of 9, the original number is as well. If you want to know how you know if a number is a factor of 9, memorize the numbers 1, 3 and 9.

A number is divisible by 9 of its digits add up to a multiple of 9.

If the digits of a number add up to a multiple of 9, the whole number is divisible by 9.

9 is both a factor and multiple of 9, since 1*9 = 9.

A factor is what goes into a number, a multiple is what a number goes into. 3 is a factor of 9 27 is a multiple of 9.

If the sum of the digits of a number is a multiple of 9, the number is a multiple of 9.

Lowest common multiple of 9 and 3 is 9.

900

which number below is a multiple of 9

9 is.

9 is a multiple of 3. It is 3 x 3.

9

If you divide 24 by 9, you do not get a whole number answer.

A common multiple of 9 and 21 is a number of the form 63*k where k is an integer.

no, a quick way to check if one number is a multiple of another number is to divide them. if the answer is not a decmal then it is a multiple, example: 199/9 = 22.1 , this is not a multiple. 555/5 = 111, this is a multiple

As 9 is a multiple of 3, any multiple of 9 will do : 9,18,27,36,45,....

Any multiple of 9.

If the digital sum of a number does not add up to 9 then it is not a multiple of 9 as for example 153 is a multiple of 9 because 1+5+3 = 9

The smallest number that you can subtract from 85232 to make it a multiple of 9 is 2

No, 92 is not a multiple of 3. A quick way to check if a number is a multiple of 3 is: add up the digits of the number you are checking; if this sum equals 3 or a multiple of 3, then the number is a multiple of 3. So in this case, 92 --> 9+2=11, which is not a multiple of 3. If you have to you can add again, so for 11 --> 1+1=2, which is not a multiple of 3. You can always repetitively add until you get to a single digit answer: if it's 3,6 or 9 then it's a multiple of 3. Also if your sum is 9 or a multiple of 9, then the original number is a multiple of 9. To check for 6, if a number is a multiple of 3, and also a multiple of 2 (an even number), then the number is a multiple of 6.

36

If the number is even, it is a multiple of 2 If the sum of the digits make a number divisible by 3, the number is a multiple of 3 If the number ends in 5 or 0, the number is a multiple of 5 If the number is divisible by 2 and 3, the number is a multiple of 6 If the sum of the digits make a number divisible by 9, the number is a multiple of 9

Yes.

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