Find the sum of:

(a) 137 and – 354

(b) -52 and 52

(c) -312, 39 and 192

(d) -50, -200 and 300

(a) We have to find the sum of given numbers:

= 137 + (-354)

= 137 – 354

= - 217

Therefore, sum is – 217

(b) We have to find the sum of given numbers:

= - 52 + 52

= 0

Therefore, sum is 0

(c) We have to find the sum of given numbers:

= - 312 + 39 + 192

= -312 + 231

= - 81

Thereore, sum is – 81

(d) We have to find the sum of given numbers:

= - 50 + (- 200) + 300

= - 50 – 200 + 300

= - 250 + 300

= 50

Therefore, sum is 50