If sum of digits is divisible by 9

Then, number is divisible by 9

 

Is 27 divisible by 9?

Sum of digits = 2 + 7 = 9

Since 9 is divisible by 9

27 is divisible by 9

 

Is 117 is divisible by 9?

Sum of digits = 1 + 1 + 7 = 9

Since 9 is divisible by 9

117 is divisible by 9

 

Is 758 divisible by 9?

Sum of digits = 7 + 5 + 8 = 20

Since 20 is not divisible by 9

So, 758 is not divisible by 9

  1. Chapter 16 Class 8 Playing with Numbers
  2. Concept wise

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.