Definition
An integer number is a multiple of 5 if it is divisible by 5.
A mathematical trick to determine whether a number is divisible by 5
In order to easily find out whether a number is a multiple of 5, we just need to look at its last digit. If it is equal to 0 or 5, then the number is a multiple of 5. Otherwise, it is not a multiple of 5
For example, 2 025 is a multiple of 5 because its last digit is 5. Conversely, 2 026 is not a multiple of 5 because its last digit is 6, and therefore neither equal to 5 nor to 0.
A few suggestions
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