Answers

2014-10-22T23:07:39+08:00
Use the divisibility rules
A number is divisible by 2  if the last digit is 0, 2, 4, 6 or 8.
A number is divisible by 3  if the sum of the digits is divisible by 3
A number is divisible by 4  if the number formed by the last two digits is divisible by 4.
A number is divisible by 5  if the last digit is either 0 or 5.
A number is divisible by 5  if the last digit is either 0 or 5.
A number is divisible by 8  if the number formed by the last three digits is divisible by 8.
A number is divisible by 9  if the sum of the digits is divisible by 9.
A number is divisible by 10  if the last digit is 0.





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2014-10-23T10:10:40+08:00
Simply use the divisibility rules a number divisible by 2 If the last digit is 2,4,6,8,and 0 a number divisible by 3 is the sum of the digits is divisible by 3 a number divisible by 4 is the last 2 digit is 0 a number divisible by 5 is the last digit either 5 or 0 a number divisible by  6 is when the number is divisible by 2 and 3 a number divisible by 7 is double the last digit and look if its divisible by 7 a number divisible by 8 is the last 3 digits are 0 a number divisible by 9 is when the digits are divisible by 9 a number divisible by 10 is the last digit is 0
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