Question

=། EXERCISE : 1.1 SER
1. Fill in the blanks to make the statements true :
(a) -10728 +
= 237 + (-10728)
(b) -17 + (13 + 18) = (-17 + 13) +
(c) 12345 +
= 12345
(d) - 9753 + 0 =
(e) - 369 +
= 0
2. Write down a pair of integers whose
(a) sum is - 4
(b) difference is -7 (c) sum is 5
3. By suitable groupings evaluate the following:
(a) – 17 + (-83 + 127) (b) 924 + (7965 + 76) (c) 1083 + [6239 + (- 83)] (d) (- 96 + 529) + (-4)
4. Sum of two integers is – 231. If one of the integers is – 335, find the other.
5. What should be added to -936 to obtain -543?
6. Subtract the sum of -93 and -572 from the difference of -531 and -721
7. Fill in the blanks :
(d) sum is 0
=
(a) Additive inverse of -85 is
(c) 7-) = 15
(b) 1-561 + 1-51 - 1-31
- (-8) = 12
(d)
5​

Answer 1

Step-by-step explanation:

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Answer 2

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