NCERT Exemplar Solutions
Class 6 - Mathematics - Unit 3: Integers - Problems and SolutionsQuestion 82
Class 6 - Mathematics - Unit 3: Integers - Problems and Solutions
Question. 82
82. Find the value of
\(49 - ( -40) - ( -3) + 69\).
Answer:
161
Detailed Answer with Explanation:
Step idea: Subtracting a negative number is the same as adding the positive of that number.
- Start with: (49 - (-40) - (-3) + 69)
- Change the first subtraction of a negative:
(49 - (-40) = 49 + 40) - Add:
(49 + 40 = 89) - Now the expression is:
(89 - (-3) + 69) - Change the next subtraction of a negative:
(89 - (-3) = 89 + 3) - Add:
(89 + 3 = 92) - Add the last number:
(92 + 69 = 161)
Answer: (161)