Q.1 Find:
(a) 35 – (20)
(b) 72 – (90)
(c) (-15) – (-18)
(d) (- 20) – (13)
(e) 23 – (-12)
(f) (-32) – (-40)
(a) 35 – (20)
(b) 72 – (90)
(c) (-15) – (-18)
(d) (- 20) – (13)
(e) 23 – (-12)
(f) (-32) – (-40)
Answer :
(a) 35 – (20)
= 35 - 20 = 15
(b) 72 – 90 = - 18
(c) (- 15) – (- 18) = (-15) + (18) = 3
(d) (- 20) – (13) = (- 20) – (13) = – [20 + 13] = – 33
(e) 23 – (- 12) = 23 + 12 = 35
(f) (- 32) – (- 40) = (- 32) + 40 = 8