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Q: When you multiplie do you only multiple up to 9?

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They also add up to a 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

So there is a rule about multiples of 9 in general: something is a multiple of 9 if and only if its digits add up to a multiple of 9. 6+4 = 10, so it is not a multiple of 9. There's also a neat trick to remembering the multiples of 9 below 99 with your fingers, but you can look this up if you're interested.

No. Numbers divisible by 9 have digits that add up to a multiple of 9. 2+3+6=11, which is not a multiple of 9.

That they add up to 9

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All you have to do is multiplie the 14 and the 9, and you will get an answer of 124. All you have to do is multiplie the 14 and the 9, and you will get an answer of 124.

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They also add up to a 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

So there is a rule about multiples of 9 in general: something is a multiple of 9 if and only if its digits add up to a multiple of 9. 6+4 = 10, so it is not a multiple of 9. There's also a neat trick to remembering the multiples of 9 below 99 with your fingers, but you can look this up if you're interested.

Add up the digits. If the total is a multiple of 9, the whole number is a multiple of 9.

No. Numbers divisible by 9 have digits that add up to a multiple of 9. 2+3+6=11, which is not a multiple of 9.

It is 11*9 = 99

If the digits of a number add up to 9 or a multiple of nine, it is a multiple of nine. For example, 108. 1+0+8=9, so 108 is a multiple of 9. Also, 9981. 9+9+8+1=27. 27 is a multiple of 9, so 27 is also a multiple of 9.Enjoy

No. You can tell if a multiple digit number is a multiple of 9 because the digits will add up to 9 or a multiple of 9. For example 81 is a multiple of 9 because 8+1=9. The two multiples of 9 closest to 87 would be 81 and 90.

99... which is 11 x 9 !

That they add up to 9