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Any number which is divisible by 9 contains digits which, when added together, are equal to 9 or a multiple of 9. For example, 63 is divisible by 9 because 6 + 3 = 9. 288 is divisible by 9 because 2 + 8 + 8 = 18 and 18/9 = 2.
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What number is not divisible by 9?
Every number is divisible by 9 but the answer wont necessarily be a whole number.
What is the converse of the sentence A number divisible by 9 is also divisible by 3?
If a number is not divisible by 3 then it is not divisible by 9.
What largest 3 - digit number divisible by both 6 and 9?
999 is divisible by 9, but not by six; the next lower number divisible by 9 is 990, which is also divisible by 6, so that's the answer. Some shortcuts for divisibility: 0 is divisible by any number. If the last digit of a number is divisible by 2, the number itself is divisible by 2. If the sum of the digits of a number is divisible by 3, the number itself is divisible by 3. If the last TWO digits of a number are divisible by 4, the number itself is divisible by 4. If the last digit of a number is divisible by 5, the number itself is divisible by 5. If a number is divisible by both 2 and 3, it is divisible by 6. If the last THREE digits of a number are divisible by 8, the number itself is divisible by 8. If the sum of the digits of a number is divisible by 9, the number itself is divisible by 9. 990: 9+9+0=18, which is divisible by 9, so 990 is divisible by 9. 18 is also divisible by 3, so 990 is divisible by 3, and since 990 ends in 0 it's also divisible by 2, meaning that it's divisible by 6 as well.
What number in 3206 is divisible by 9?
There is only one number in 3206 and that is 3206. And that, is not divisible by 9.
Does 3 go into 54?
Yes, 18 times 3 = 54. There is a very easy way to tell if a number is divisible by 3. Add up the digits in the number. If the sum of the digits is divisible by 3, then the number is divisible by 3. For example, 5 + 4 = 9, and 9 is obviously divisible by 3. So, 54 is too.
What number is not divisible by 9?
Every number is divisible by 9 but the answer wont necessarily be a whole number.
Is 4851 a prime number?
No, you can tell just by looking at it that it is divisible by 3 and 9.
How can you tell whether a number is divisible by 3?
If the sum of its' digits are divisible by 3 for all numbers greater than 9.
What is the converse of the sentence A number divisible by 9 is also divisible by 3?
If a number is not divisible by 3 then it is not divisible by 9.
Is every number that is divisible by 9 divisible by 3?
Yes, every number that's divisible by 9 is divisible by 3
Can a number be divisible by 9 and 3?
Yes, any number divisible by 9 is also divisible by 3.
What largest 3 - digit number divisible by both 6 and 9?
999 is divisible by 9, but not by six; the next lower number divisible by 9 is 990, which is also divisible by 6, so that's the answer. Some shortcuts for divisibility: 0 is divisible by any number. If the last digit of a number is divisible by 2, the number itself is divisible by 2. If the sum of the digits of a number is divisible by 3, the number itself is divisible by 3. If the last TWO digits of a number are divisible by 4, the number itself is divisible by 4. If the last digit of a number is divisible by 5, the number itself is divisible by 5. If a number is divisible by both 2 and 3, it is divisible by 6. If the last THREE digits of a number are divisible by 8, the number itself is divisible by 8. If the sum of the digits of a number is divisible by 9, the number itself is divisible by 9. 990: 9+9+0=18, which is divisible by 9, so 990 is divisible by 9. 18 is also divisible by 3, so 990 is divisible by 3, and since 990 ends in 0 it's also divisible by 2, meaning that it's divisible by 6 as well.
How do you figure out if a number is divisible by 9?
You divide the number by 9...=============================Try this:Add up the digits in the number.If that sum is divisible by 9, then the original number is divisible by 9.
Is 423 a composite?
Yes, it is a composite number. It's divisible by 3. A quick way to tell if a number is divisible by 3 is to add up all the digits in the number. If their sum is divisible by 3, then the number is divisible by 3. For example, 4 + 2 + 3 = 9, and 9 is obviously divisible by 3. So, 423 must be divisible by 3. 423 divided by 3 is 141.
Is 132 divisible by 9?
No - any number divisible by 9 will have the sum of its digits divisible by 9.
Is 4860 divisible by 9?
Yes, it is. One way to tell if a number is divisible by nine is to add up all of the numbers until you get a one digit number, and if the number isn't nine, the number isn't divisible by nine. 4+8+6+0= 18 1+8=9
What is the divisibility rule for 18?
Any even number divisible by 9, if the sum of the digits is divisible by 9. If it's an even number divisible by 9, it's divisible by 18.
