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A Magic Grid of Integers
Last updated at January 21, 2026 by Teachoo
Class 7 (Ganita Prakash 1, 2 & old NCERT)
Chapter 2 Class 7 - Operations with Integers (Ganita Prakash II)
- Quick Recap on Intergers
- Carrom Coin Integers
- Token Model for Adding and Subtracting Integers
- Multiplication of Integers
- Patterns in Integer Multiplication
- Brahmagupta’s Rules for Multiplication and Division of Integers
-
A Magic Grid of Integers
- Division of Integers
- Figure it out - Page 39
- Integer Expressions - Properties and Pattern
- Figure it out - Page 42, 43, 44
Transcript
A Magic Grid of IntegersAn magic grid looks like We follow these steps Circle any number Strike out the row and column of the chosen number Circle any unstruck number Repeat until there are no more unstruck numbers Multiply the circled numbers Let’s do this Now, First we chose 14, as black circle Then, we chose –6, as blue circle Then, we chose 18, as red circle Then, we only had 20 left. So, we chose 20, as purple circle Thus, Multiplication of numbers circled = 14 × –6 × 18 × 20 = –14 × 5 × 18 × 20 = –30,240
