Students can Download Class 7 Maths Chapter 1 Integers Ex 1.2 Questions and Answers, Notes Pdf, KSEEB Solutions for Class 7 Maths helps you to revise the complete Karnataka State Board Syllabus and to clear all their doubts, score well in final exams.

## Karnataka State Syllabus Class 7 Maths Chapter 1 Integers Ex 1.2

Question 1.

Write down a pair of integers whose:

a) sum is -7

– 2 + -5 = -7

∴ The two integers be -2 and -5.

b) difference is -7

-20 – (-10) = -10 (∵ -20 – (-10))

-20 + 10 = -10

∴ The two integers be – 20 and -10.

c) sum is 0

Any two integers of same number but different sign.

For eg : 10 + (-10) = 0.

Question 2.

a) Write a pair of negative integers whose difference gives 8.

Solution:

Let – 4 and – 12 are two negative integers.

∴ – 4 – (- 12)

– 4 + 12 = 8

b) Write a negative integer and a positive integer whose sum is – 5.

Solution:

Let – 10 and 5

∴ – 10 + 5 = – 5

c) Write a negative integer and a positive integer whose difference is – 3.

Solution:

Let – 2 and 1

– 2 – (+ 1)

– 2 – 1 = – 3

Question 3.

In a quiz, team A scored – 40, 10, 0, and Team B scored 10, 0, – 40 in three successive rounds. Which team scored more? Can we say that we can add integers in any order?

Solution:

Team A scored = -40 + 10 + 0 = -30

TeamB scored = 10 + 0 – 40 = -30

Yes. We can add integers in any order.

Question 4.

Fill in the blanks to make the following statements true:

i) (- 5) + (- 8) = (- 8) + (……..)

(- 5) + (- 8) = (- 8) + __(- 5)__

ii) 53 + = – 53

– 53 + __0__ = – 53

iii) 17 + …. 0

17 + __– 17__ = 0

iv) 113 + (- 12) + (……) = 13 + [(- 12) + (- 7)]

[13 + (- 12) + __(- 7)__ = 13 + [(- 12) + (- 7)]

v) (- 4) + [15 + (- 3)] = [- 4 + 15] + __– 3__

(- 4) + [15 + (- 3)] = [- 4 + 15] + __– 3.__