Divisibility

Divisibility rules tell you whether a number divides exactly without doing the long division.

🎯 Try it yourself

Tap an answer. You'll see if it's right, and why. Easy ones come first.

1. Q1Easy

   Which number is divisible by 3?

   1. A3,322
   2. B3,337
   3. C3,318
   4. D3,290
   Show answer

   Answer: C. 3,318

   💡 3,318 is: its digit sum is a multiple of 3.

2. Q2Easy

   Which number is divisible by 4?

   1. A8,961
   2. B8,958
   3. C8,992
   4. D8,998
   Show answer

   Answer: C. 8,992

   💡 8,992 is: its last two digits make a multiple of 4.

3. Q3Medium

   Which number is divisible by 8?

   1. A9,774
   2. B9,735
   3. C9,788
   4. D9,768
   Show answer

   Answer: D. 9,768

   💡 9,768 is: its last three digits make a multiple of 8.

4. Q4Medium

   Which number is divisible by 11?

   1. A5,155
   2. B5,137
   3. C5,176
   4. D5,169
   Show answer

   Answer: B. 5,137

   💡 5,137 is: the alternate digit sums differ by a multiple of 11.

5. Q5Medium

   Which number is divisible by 9?

   1. A6,846
   2. B6,898
   3. C6,867
   4. D6,828
   Show answer

   Answer: C. 6,867

   💡 6,867 is: its digit sum is a multiple of 9.