Question

13. Find the sum of following:
a) (-312), 39, 16 and -20
b) -3, 46, (-65) and (-8)
c) 1-2+3-4+5-6+7-8+9-10​

Answer 1

a) (-312) + 39 + 16 +(-20)

= -312 + 55 -20

=-322+55

= -267

b) (-3) +46 +(-65)+(-8)

= -3 + 46 -65 - 8

= -76 + 46

= -30

c) 1 - 2 + 3 - 4 +5 - 6 +7 - 8 + 9 -10

= - 5

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Answer 2

Answer:

a) - 277

b) - 30

c) 3

Step-by-step explanation:

a) - 312-20+39+16

- 332+55

- 277

b) -3-65-8+46

- 68-8+46

- 76+46

- 30

c) 1-2+3-4+5-6+7-8+9-10

13-10

3