Question

Write the divisibility rules from 5 to 15 . Explain the divisibility rules with examples​

Answer 1

Answer:

Divisibility rules for numbers 1–30

Divisor Divisibility condition

15 It is divisible by 3 and by 5.

16 If the thousands digit is even, the number formed by the last three digits must be divisible by 16.

If the thousands digit is odd, the number formed by the last three digits plus 8 must be divisible by 16.

Hopes it will help you

.xD

Answer 2

Divisibility Rule for 5: A number is divisible by 5 if the last digit is either 0 or 5.

Example: 3450. The last digit is 0. So it is divisible by 5.

Divisibility Rule for 6: A number is divisible by 6 if it is divisible by both 2 and 3.

Example: 444 is a number. It is divisible by 2 and the sum 4+4+4 is 12 and it is also divisible by 3. So the number is divisible by 6.

Divisibility Rule for 7: Double the unit's digit and subtract it from the remaining part of the number, if the resulting number is divisible by 7 then the given number is also divisible by 7.

Example: 217 is a number. 21-7×2 = 21-14 = 7/7 = 1

Therefore 217 is divisible by 7.

Divisibility Rule of 8: A number is divisible by 9 if the number formed by it's last three digits is divisible by 8.

Example: 7880 is a number. Last three digits are divisible by 8. Therefore the number is also divisible by 8.

Divisibility Rule for 9: A number is divisible by 9 if the sum of it's digits is divisible by 9. Example: 576 is a number. 5+7+6 = 18. 18 is divisible by 9. So 576 is also divisible by 9.

Divisibility Rule for 10: A number is divisible by 10 if it's last digit is zero.

Example: 100,560..

Divisibility Rule for 11: A number is divisible by 11 if the difference between the sum of the alternate digits is either equal to zero or a multiple of 11.

Example: 121 is a number.

(1+1) - 2 = 2-2 = 0. Therefore 121 is divisible by 11.

Divisibility Rule for 12:

If the number is divisible by both 3 and 4, then the number is divisible by 12 exactly.

Example: 840 is divisible by 4 and also by 3. hence, 840 is divisible by 12.

Divisibility Rule for 13: A number is divisible by 13 when the ones place digit of a number is multiplied by 4 and the product when added to the rest of the number either gives 0 or a multiple of 13.

Example: 1,139,502 is a number. 502 - 139 + 1 = 364. 364/13. Therefore, 1139502 is divisible by 13.

Divisibility Rule for 14: If the number is divisible by both 2 and 7 then the number is exactly divisible by 14.

Example: 1428 is a number. It is divisible by 2. 1428 is multiple of 7 so this number is also divisible by 7.

Divisibility Rule for 15: A number is divisible by 15 if the number is divisible by 3 and 5 both.

Example: 30 is a number divisible by 3 and 5. So it is also divisible by 15.