Question

Add without using number line :
(a) 11 + (-7)
(b) (-13) + (+18)
(c) (-10) + (+ 19)
(d) (-250) + (+ 150
(e) (- 380) + (-270)
(f) (-217) + (- 100)​

Answer 1

Answer:

(a) 11 + (-7)= 11-7=4

(b) (-13) + (+18)= -13+18=5

(c) (-10) + (+ 19)= -10+19=9

(d) (-250) + (+ 150)= -250+150= 100

(e) (- 380) + (-270)= -380-270= -650

(f) (-217) + (- 100)= -217-100= -317

Answer 2

Answer:

a) 4 b) 5 c) 9 d) -100 e) -650 f) -317

Step-by-step explanation:

A) 11 + (-7) = 11 - 7 = 4

B) (-13) + (+18) = -13 + 18 = 18 - 13 = 5

C) (-10) + (+19) = -10 + 19 = 19 - 10 = 9

D) (-250) + (+150) = -250 + 150 (taking - common) = (-250) - 150 = -100

E) (-380) + (-270) = -(380 + 270) = -650

F) (-217) + (-100) = -(217 + 100) = -317