Question

(c) (-7)-(-9) = 2
(d) (-10) + 10 = 0 or 5+(-5) = 0
Can you write more pairs in these examples?
EXERCISE 1.2
1. Write down a pair of integers whose:
(a) sum is -7 (b) difference is -10 (c) sum is 0
2. (a) Write a pair of negative integers whose difference gives 8.
(b) Write a negative integer and a positive integer whose sum is-5.
(c) Write a negative integer and a positive integer whose difference is -3.
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?
4. Fill in the blanks to make the following statements true:
(1) (-5) + (-8)= (-8) + (............)
(i) -53 + ............ = -53
(ii) 17 + ............ = 0
(iv) [13+(- 12)] + ...........) = 13+ [(-12)+(-7)
(v) (-4) + [15 +(-3)] = [- 4 + 15] + ..........
INATION OF INTEGERS​

Answer 1

Answer:

1.(-4)+(-3)=-7 b.-20-(-10)=-10

2.a.-2-(-10)=8 b.-4+9=5 c.

3.both teams are equal.we can add

4.1.-5

2.0

3.-17

4.-7

5.-3