Question

Divisiblity Test of 7,8,9​?

Answer 1

Step-by-step explanation:

Divisibility Test for 7: Cross off last digit, double it and subtract. Repeat if you want. If new number is divisible by 7

Divisibility Rule of 8

If the last three digits of a number are divisible by 8, then the number is completely divisible by 8. Example: Take number 24344. Consider the last two digits i.e. 344.

If the sum of the digits of a number is divisible by 9, then the number is divisible by 9. Some examples of numbers divisible by 9 are as follows. The number 51984 is divisible by 9 because the sum of its digits 5+1+9+8+4=27 is divisible by 9.

Answer 2

Answer:

Divisibility test of 7: To check if a number is evenly divisible by 7: Take the last digit of the number, double it Then subtract the result from the rest of the number If the resulting number is evenly divisible by 7, so is the original number.

Divisibility test of 8: If the last three digits of a number are divisible by 8, then the number is completely divisible by 8.

Divisibility test of 9: If the sum of the digits of a number is divisible by 9, then the number is divisible by 9.