Find if a Number is Divisible by 20

Given here is the tutorial explaining the shortcut method to determine if the given number is divisible by 20. This tutorial explains the Divisibility Rule for 20. Using this rule you can determine if the number is divisible by 20 without performing the division.

Divisibility Rule for 20

Steps to be Followed:

Check whether the last two digits are even and divisible by 10. Alternatively, check whether the last two digits are divisible by 20.
If both the conditions are satisfied, then the original number is also divisible by 20.

Example

Find if the number 2880 is divisible by 20

Solution :

Applying the divisibility rule for 20,

Step 1:

Here, last two digit 80 is even and the last digit is also 0
Hence, we know that the given number 2880 is divisible by 10

Step 2:

The last two digits of the number 2880 is 80
80 is divisible by 20 (i.e) 20 x 4 = 80
Therefore, 2880 is also divisible by 20

Step 3:

The above given number is divisible by both 10 and 20. Hence, the original number (i.e) 2880 is also divisible by 20.


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