Question

8.
Evaluate the following mentally
(a) 9×(−8)
(b) 6×(−7)×(−1)×(−1)
(c) 0×(−20+9)
(d) (−8)×(−8)​

Answer 1

Answer:

(a)= -72

(b)= -42

(c)= 0

(d)

Answer 2

Answer:

a) -72

b) -42

c) 0

d) 64

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