Divisibility Tests Warmup Practice Problems Online

Is 12345 divisible by 5?

Note: 12345 is divisible by 5 if it can be divided into groups of 5 with nothing left over.

Is 234 divisible By 9?

A number that consists entirely of $1$ s $($ like $1, 11, 111,$ etc. $)$ is called a repunit. How many digits long is the smallest repunit that is divisible by $9?$

For how many different values of $A$ is $27A4$ (a four digit number where the third digit is $A$ ) divisible by 6?

For how many different values of $A$ is the three digit number $3A6$ even?

Note: $A$ can be any of the 10 digits from 0 to 9.

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Divisibility Tests Warmup