Question
Mathematics Question on Subtraction of Integers with the help of a Number Line
Find:
(a) (- 7) - 8 - (- 25)
(b) (- 13) + 32 - 8 - 1
(c) (- 7) + (- 8) + (- 90)
(d) 50 - (- 40) - (- 2)
Answer
(a) (-7) – 8 – (-25)
= (-7) – 8 + 25
= -15 + 25 = 10
(b) First, let’s add all the positive numbers and all the negative numbers separately
(-13) + 32 – 8 – 1
= 32 - 22
= 10
(c) (- 7) + (- 8) + (- 90)
= – (7 + 8 + 90)
= -105
(d) 50 – (-40) – (-2)
= 50 + 40 + 2
= 92