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Divisibility Rules 2,3,5.6.9.10

3,731 views · Published 24 July 2016 · 2:23 · Indexed 12 November 2026

Channel: MooMooMath and Science · 2016 · Film & Animation

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These divisibility rules for 2,3,5,6,9, and 10 can help you become a stronger Math student.
Please note: I left off 7 You can follow this divisibility rule.

 "The divisibility rule of 7 picks the last digit of a number, multiplies it by 2, and subtracts it with the rest of the number to its left. We check to see if the difference is a 0 or a multiple of 7 to confirm that it is completely divisible by 7"

 A number is divisible by 2 if it ends in 0, 2, 4, 6, or 8 (all even numbers).
 Example: 356 is divisible by 2 because the number in the one's place is 6.
               
A number is divisible by 3 if the sum of the digits is divisible by 3.
 Example: 516 is divisible by 3 because the 5 + 1 + 6 = 12, and 12 is divisible by 3.
              
A number is divisible by 4 if the last two digits form a number divisible by  4.
 Example: 3,532 is divisible by 4 because 32 is divisible by 4.
                  
 A number is divisible by 5 if it ends in 0 or 5. 
 Example: 670 is divisible by 5 because the digit in the one's place is a 0.
                
 A number is divisible by 6 if it is divisible by both 2 AND 3.
 Example: 702 is divisible by 6 because it ends in a 2 AND  8 + 1 + 0 = 9 which is divisible by 3. 
             
 A number is divisible by 9 if the sum of the digits is divisible by 9.
 Example: 297 is divisible by 9 because 2 + 9 + 7 = 18 which is divisible by 9.
                  
A number is divisible by 10 if it ends in a 
 Example:  3400 is divisible by 10 because there is a 0 in the one's place.

Updated video
https://youtu.be/E4yzE5NumV8

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