Question

Find:

(a) 35 −(20) (b) 72 − (90)

(c) (−15) − (− 18) (d) (− 20) − (13)

(e) 23 −(− 12) (f) (− 32) − (− 40)

Answer 1

(a) 35 −20 = 15

(b) 72 −90 = −18

(c) −15− (−18) = − 15 + 18 = 3

(d) −20 − 13 = −33

(e) 23 −(−12) = 23 + 12 = 35

(f) (−32)− (−40) = −32 + 40 = 8