Find if a Number is Divisible by 18

A divisibility test is determined as a rule to form one whole number which is divisible by another number. Given here is the tutorial explaining the shortcut method to determine if the given number is divisible by 18. Using this rule you will come to know the step by step procedure of how a number is divisible by 18. Refer the below tutorial page to find if a number is divisible by 18.

Divisibility Rule for 18

Rules:

 1. Number should be a even number. Its unit digit should be 0,2,4,6 or 8.

 2. Sum of the digits of a number should be divided by 9.

Example

Find if the number 2880 is divisible by 18

Solution :

Applying the divisibility rule for 18,

Step 1:

Since unit digit of a given number is 0, the given number is considered as even. Hence, rule 1 is satisfied.

Step 2:

Adding all the digits, we get

2 + 8 + 8 + 0 = 18

Step 3:

Add the resultant digits to get a single digit

1 + 8 = 9

Step 4:

The above digit (9) is divisible by 9. Hence, rule 2 is satisfied.

Hence, the given number 2880 is completely divisible by 18.


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