Rule for 2. All even numbers are divisible by2.
Rule for 3. Add all the digits together than see if it is divisible by .
Rule for 4. All numbers that are divisible by 2 times.
Rule for 5. All whole numbers that end with witha 5 or a 0.
Rule for 6. If the number is divisible by 2 and 3 it is divisible by 6.
Rule for 7. No rule!, try to find one!
Rule for 8.All numbers divisible by 2 twice.
Rule for 9. Add all the digits together than see if it is divisible by 9.
Rule for 10. All whole numbers that end with a 0
Hope this helps!