Question

Hence, a
-8.
(11) (-7)+(-23)
(081 (-48)+(-36)
EXERCISE 1A
1. Evaluate:
(1) 15+(-8)
(11) (-16) +9
(iv) (-32) + 47
(v) 53+(-26)
2. Find the sum of:
(1) 153 and -302 (ii) 1005 and -277
(iv) -489 and -324 (v) -1000 and 438
3. Find the additive inverse of:
(1) -83
(11) 256
(H1) 0
(11) -2035 and 297
(vi) -238 and 500
(iv) - 2001​

Answer 1

Answers:

1.

(1) 15 + (-8) = 15-8 = 7

(2) (-16) + 9 = 9 - 16 = -7

(4) (-32)+47= 47 - 32 = 15

(5) 53 + (-26) = 53 - 26= 27

2.

(1) 153 + ( - 302) = ( -149)

(2) 1005 + (-277) = 728

(4) -489 + (-324) = (-813)

(5) -1000 + 438 = (-562)

3.

(1) the additive inverse of (-83) is (+83)

-83+83= 0

(2) the additive inverse of 256 is (- 256)

256 + ( - 256) = 0

(H1) the additive inverse of 0 is 0

(11) the additive inverse of (-2035) is 2035

2035+ (-2035) = 0

the additive inverse of 297 is (-297)

-297+297=0

(6) the additive inverse of (-238) is 238

- 238 + 238 = 0

the additive inverse of 500 is (-500)

500 +(-500)= 0

(4) the additive inverse of (-2001) is 2001

(-2001)+2001 = 0