Divisibility rules

Question 1

divisibility rule for 3

Answer 1

If the sum of the digits of a number are a multiple of 3 then the whole number is also a multiple of 3

516= 5+1+6= 12 / 3= 4

Question 2

divisibility rule for 4

Answer 2

If the last 2 digits of a number are divisible by 4 then its a multiple of 4

Question 3

divisibility rule for 6

Answer 3

If the last given digit of a number is a multiple of 2

and the sum of the digits adds up to a multiple of 3

630 this number is divisible y 2 as the last digit is 0

6+3+0= 9 which is divisible by 3 hence divisible by 6

Question 4

divisibility rule for 8

Answer 4

If the last 3 digits of a number are divisible by 8

24334 334 can be divided by 8

Question 5

divisibility rule for 9

Answer 5

If the sum of all of the last three digits is a multiple of 9 it is divisible by 9

162
1+6+2 =9

Question 6

divisibility rule for 12

Answer 6

If a number is divisible by 3 and 4 then also divisible by 12

5864

5+8+6+$= 23 sum of the digits are not a multiple of 3

64 however last 2 digits divisible by 4