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if you start with 09, add 9 to it, since 9 is one less than 10, the ones spot actually goes down by one while the tens spot goes up by one. Same is true when you add 9 again. So, 09 becomes 18 which then becomes 27 and so on.
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∙ 11y ago
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What divisibility rules were combined to make the divisibility rule of 36?
The divisibility rules of 4 and 9 are combined to make the divisibility rule of 36.
Why does divisibility rule for 9 work?
add all the digits together and see if it is divisible by nine.
What is the rule for divisibility of 3?
It is 3 6 9
Do multiples of 9 add up to 9?
Yes. It is the divisibility rule for 9.
What are the divisablity rules?
the divisibility rule for 2 is: The number is even;the last digit ends with a 2,4,6,8,10, etc.The divisibility rule fir 3 is: The sum of the number is divisible by 3The divisibility rule for 4 is: The last two digits are divisible by 4The divisibility rule for 5 is: The number ends with a 5 or 0The divisibility rule for 6 is: The sum CAN be divisible by 2 and or 3The divisibility rule for 9 is: The sum of the number is divisible by 9The divisibility rule for 10 is : The number ends with a 0
Why does divisibility rule for 6 work?
By tautology. If it did not work, it would not be a divisibility rule!
How does the divisibility rule for 4 and 8 work?
why does the divisibility rule work for 4
What divisibility rules were combined to make the divisibility rule of 36?
The divisibility rules of 4 and 9 are combined to make the divisibility rule of 36.
Why does divisibility rule for 9 work?
add all the digits together and see if it is divisible by nine.
Divisibility rule of 2345678910?
it is divisible by 3 and 9
What is the rule for divisibility of 3?
It is 3 6 9
Do multiples of 9 add up to 9?
Yes. It is the divisibility rule for 9.
What are the divisablity rules?
the divisibility rule for 2 is: The number is even;the last digit ends with a 2,4,6,8,10, etc.The divisibility rule fir 3 is: The sum of the number is divisible by 3The divisibility rule for 4 is: The last two digits are divisible by 4The divisibility rule for 5 is: The number ends with a 5 or 0The divisibility rule for 6 is: The sum CAN be divisible by 2 and or 3The divisibility rule for 9 is: The sum of the number is divisible by 9The divisibility rule for 10 is : The number ends with a 0
What is the divisibility rule for 99?
Its digital sum is 9 so it is divisible by 9
Divisibility rule for 9?
If the digit sum of a number adds up to 9 then it is divisible by 9.
What is the divisibility rule of 18?
It is even and the sum of its digits is divisible by 9.
What is the divisibility rule for 34?
There is no easy rule for divisibility by 34.
