Ex.1.1 Q2 Integers - NCERT Maths Class 7

Go back to  'Ex.1.1'

In a quiz, positive marks are given for correct answers and negative marks are given for incorrect answers. If Jack’s score in five successive rounds were \(\rm{}25, –5, –10,15, 10.\) What was his total in the end?

{%--answer--%}

What is known?

Jack’s score in five successive rounds.

What is unknown?

Jack’s total score in five rounds.

Reasoning:

Just add the scores in five rounds to get the total score.

Steps:

Jack’s scores in the five successive rounds are \(25, –5, –10, 10\) and \(15\)

Total marks obtained by jack

\[\begin{align}& = 25 + \left( { - 5} \right) + \left( { - 10} \right) + 10 + 15\\& = 25-5-10 + 10 + 15\\& = 35\end{align}\]

Thus, jack obtained \(35\) marks in the quiz.

 Video Solution
Integers
Ex 1.1 | Question 2
  
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