| Divisibility Tests | Rules |
|---|---|
| 2 | If the number end with 0,2,4,6,8 |
| 3 | If the sum of digits of the number is divisible by 3 |
| 4 | If the number formed by last 2 digit is divisible by 4. |
| 5 | If the number ends with 0 or 5 |
| 6 | If the number is divisible by both 2 and 3. |
| 7 | If we subtract twice the digit in ones place from the rest of the given number and the difference is either 0 or a number divisible by 7. |
| 8 | If the last 3 digit is divisible by 8 or ends with 000. |
| 9 | If the sum of digits is divisible by 9. |
| 10 | If the number ends with 0. |
| 11 | If the difference between the sum of digits in odd places and the sum of digits in even places is either 0 or multiple of 11. |
| 12 | If the number is divisible by both 3 and 4. |
Note: There is negative marking for incorrect answer.
1) Using divisbility rule, check divisibility by 2.
(a) 12481
(b) 27534
(c) 23343
(d) 12210
2) Using divisbility rule, check divisibility by 3.
(a) 12481
(b) 27534
(c) 23343
(d) 12210
3) Using divisbility rule, check divisibility by 4.
(a) 2255
(b) 2032
(c) 9454
(d) 8660
4) Using divisbility rule, check divisibility by 5.
(a) 2255
(b) 2032
(c) 9454
(d) 8660
5) Using divisbility rule, check divisibility by 6.
(a) 12481
(b) 27534
(c) 23343
(d) 12210
6) Using divisbility rule, check divisibility by 7.
(a) 12481
(b) 27534
(c) 23343
(d) 12210
7) Using divisbility rule, check divisibility by 9.
(a) 7065
(b) 27531
(c) 23343
(d) 12213
8) Using divisbility rule, check divisibility by 11.
(a) 7601
(b) 27531
(c) 23343
(d) 12210
Score:0
1) What minimum number must be added to the following numbers so that it becomes divisible by 3.
6463
2) What minimum number must be added to the following numbers so that it becomes divisible by 4.
24621
3) What minimum number must be added to the following numbers so that it becomes divisible by 5.
3125
4) What minimum number must be added to the following numbers so that it becomes divisible by 6.
7247
5) What minimum number must be added to the following numbers so that it becomes divisible by 9.
6649
6) What minimum number must be added to the following numbers so that it becomes divisible by 11.
2630
Score:
1) What minimum number must be subtracted to the following numbers so that it becomes divisible by 3.
3664
2) What minimum number must be subtracted to the following numbers so that it becomes divisible by 4.
12624
3) What minimum number must be subtracted to the following numbers so that it becomes divisible by 5.
5231
4) What minimum number must be subtracted to the following numbers so that it becomes divisible by 6.
7472
5) What minimum number must be subtracted to the following numbers so that it becomes divisible by 9.
9466
6) What minimum number must be subtracted to the following numbers so that it becomes divisible by 11.
2630
Score: