Lesson eLearning

What is the sum of all integers from to inclusive?

medium MCQ 3 marks Class 7 · Mathematics · Integers
  1. 0
  2. 1
  3. -1
  4. 2
Answer
0

The correct answer is 0 — The total sum is .

Step-by-step solution

  1. List the pairs of integers that are negatives of each other: .
  2. Add each pair: each equals .
  3. Add the remaining integer to the sum of the pairs.
  4. The total sum is .
Common mistake: Forgetting that positive and negative pairs cancel out

Concept tested: Sum of symmetric integers

Published · How this solution was prepared and checked

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