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Question 1 - Figure it out - Page 131 - Chapter 5 Class 8 - Number Play (Ganita Prakash)
Last updated at January 8, 2026 by Teachoo
Figure it out - Page 131
Class 8 (Ganita Prakash - 1, 2 & Old NCERT)
Chapter 5 Class 8 - Number Play (Ganita Prakash)
- Sum of Consecutive Numbers
- Parity of Arithmetic & Algebraic Expressions
- Pairs to Make Fours
- Factors and Multiples
- Always, Sometimes, or Never
- What Remains?
- Figure it out - Page 122, 123
- Divisibility Rules - 2, 5, 10 and 3
- Shortcut for Divisibility by 9
- Figure it out - Page 126
- Shortcut for Divisibility by 11
- Divisibility Shortcuts for Other Numbers
- Digital Roots
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Figure it out - Page 131
- Digits in Disguise
- Figure it out - Page 132, 133, 134
Transcript
Question 1 The digital root of an 8-digit number is 5. What will be the digital root of 10 more than that number?Think of the digital root as the "remainder when dividing by 9". If the current number acts like a 5, and we add 10 to it... The digital root of 10 is 1 (1 + 0 = 1). So, we are just adding the roots: 5 + 1 = 6 Answer: The new digital root is 6
