Ex.1.2 Q1 Integers - NCERT Maths Class 7

Go back to  'Ex.1.2'

Question

Write down a pair of integers, whose:

a) Sum is \(–7 \)       b) Difference is \(–10\)       c) Sum is \(0\)

Text Solution

What is known?

Sum and difference of a pair of integers.

What is the unknown?

The two integers whose sum is given.

Reasoning:

Add or subtract the two values.

Steps:

a) sum is \(-7\)

Let us take a pair of integer \(-8\) and \(+1 \)

\[\begin{align}&={- 8}{+1}\\&=-7\end{align}\]

b) difference is \(-10 \)
Let us take a pair of integer \(-12\) and \(-2 \)

\[\begin{align}&={- 12\,- }{(-2)}\\&=-10\end{align}\]

c) sum is \(0\)

Let us take a pair of integer \(-5\) and \(+5\)

\[\begin{align}&={5\,+ }{(-5)}\\&=0\end{align}\]

  
Learn from the best math teachers and top your exams

  • Live one on one classroom and doubt clearing
  • Practice worksheets in and after class for conceptual clarity
  • Personalized curriculum to keep up with school