Use the divisibility rule for 10. If the number is divisible by 10, then it is obviously also divisible by 5.
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
The divisibility rule for 2 works because the base of our number system, 10, is divisible by 2.
There is no easy rule for divisibility by 34.
The divisibility rules of 4 and 9 are combined to make the divisibility rule of 36.
If the number is whole and ends in zero, it's divisible by 10
By tautology. If it did not work, it would not be a divisibility rule!
why does the divisibility rule work for 4
If the rules for 2 and 3 work, the number is divisibale by 5.
if the number ends on 5 or 0 the number is divisible by 5
If the number ends in 5 or 0 the whole number is divisible by 5.