Divisibility Rule for 10

DIVISIBILITY RULE FOR 10

If a number ends with 0, then it is divisible by 10.

Example 1 :

Check whether 9470 is divisible by 10.

Solution :

The number 9470 ends with 0.

So, it is divisible by 10.

Example 2 :

Check whether 78000 is divisible by 10.

Solution :

The number 78000 ends with 0.

So, it is divisible by 10.

Example 3 :

Which of the following numbers must be added to 78 to get a number which is divisible by 10 ?

(A) 0, (B) 1, (C) 2

Solution :

78 + 0 = 78

78 + 1 = 79

78 + 2 = 80

In the above calculation, when we add 2 to 78, we get 80 which ends with 0.

Because the number 80 ends with 0, it is divisible by 10.

So, option C is correct.

Example 4 :

Which of the following numbers should be multiplied by 24 to get a number which is divisible by 10 ?

(A) 4, (B) 5, (C) 6

Solution :

4 ⋅ 24 = 96

5 ⋅ 24 = 120

6 ⋅ 24 = 144

In the above calculation, when we multiply 5 24, we get 120 which ends with 0.

Because the number 120 ends with 0, it is divisible by 10.

So, option B is correct.