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.
The divisibility rules of 4 and 9 are combined to make the divisibility rule of 36.
add all the digits together and see if it is divisible by nine.
It is 3 6 9
Yes. It is the divisibility rule for 9.
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
By tautology. If it did not work, it would not be a divisibility rule!
why does the divisibility rule work for 4
The divisibility rules of 4 and 9 are combined to make the divisibility rule of 36.
add all the digits together and see if it is divisible by nine.
it is divisible by 3 and 9
It is 3 6 9
Yes. It is the divisibility rule for 9.
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
Its digital sum is 9 so it is divisible by 9
If the digit sum of a number adds up to 9 then it is divisible by 9.
It is even and the sum of its digits is divisible by 9.
There is no easy rule for divisibility by 34.