Number Play — Formula Sheet
CBSE · Class 7 · Mathematics
3 formulas from Number Play (CBSE Class 7 Mathematics) on one page, grouped by topic. Part of the CBSE Class 7 Mathematics syllabus.
Interactive on Super Tutor
Studying Number Play? Get the full interactive chapter.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for formula sheet and more.
Free trial, no card needed.
Formulas and Key Relations
2. Parity: Even and Odd
nth even number: 2n [n = position number in the sequence]
3. Grid Sums and Magic Squares
Row-sum total identity for 1-9 grid: sum of all row sums = sum of numbers 1 to 9 = 45 [used to derive magic sum = 45/3 = 15]
4. Virahānka-Fibonacci Numbers
Virahānka-Fibonacci recurrence: next term = sum of the two previous terms [applies to sequence 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, ...]
Full sheet with units and worked examples
View AllFrequently Asked Questions
What are the important topics in Number Play for CBSE Class 7 Mathematics?
How many formulas are in Number Play?
How should I revise Number Play for Class 7 exams?
Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
More resources for Number Play
Practice Quiz
Test yourself with a quick quiz
Important Questions
Exam-style questions with answers
Revision Notes
Key points for last-minute revision
Chapter Summary
Understand the chapter at a glance
Concept Maps
See how topics connect
Study Plan
Step-by-step plan for this chapter
Flashcards
Quick-fire cards for active recall
Syllabus
What topics to cover
NCERT Solutions
Every textbook question solved step by step
For serious students
Get the full Number Play chapter — start free.
Quizzes, flashcards, an AI doubt solver and a study plan for CBSE Class 7 Mathematics. Free to start, no card needed.