Write a 3-digit number that is divisible by both 3 and 4. Explain how you know this number is divisible by 3 and 4.

108 is a 3 digit number which is divisible by both 3 and 4

Step-by-step explanation:

We have to write a 3 digit number which is divisible by both 3 and 4

From divisibility rule we know that when the sum of of number is divisible by 3 then the number is also divisible by 3

And if the last digit of number is divisible by 4 then number is also divisible by 4

If we take number 108 then the sum of digit = 1+0+8=9, as 9 is divisible by 3 so 108 will be also divisible by 3

And in 108 last digit is 8 which is divisible by 4 so 108 will be also divisible by 4

So 108 is a 3 digit number which is divisible by both 3 and 4