Practice Objectives
• Demonstrate the ability to determine if a number is divisible by 7
• Demonstrate the ability to determine if a number is divisible by 11

## Practice the Divisibility Rules for 7 & 11

Instructions:

Answer 7/10 questions correctly to pass.

Determine if the given number is divisible by .

Problem:

Correct!

Not Correct!

Divisibility by 7:

• We start by removing the final digit from the number, double the number and subtract it away from the shortened original number
• If the number formed is a 0 or a number that is divisible by 7, the original number is divisible by 7. We can repeat the process as needed

Divisibility by 11:

• Form the sum of the digits in the odd places and subtract away the sum of the digits in the even places
• The odd places refer to the 1st digit, 3rd digit, 5th digit, and so on
• The even places refer to the 2nd digit, 4th digit, 6th digit, and so on
• Note, we can count our digits starting from right to left or left to right. This can result in a sign difference, which is not important
• If the result is a 0 or a number that is divisible by 11, then the original number is divisible by 11

Step-by-Step:

You Have Missed 4 Questions...