Question

9) By what number will you multiply:
(i) 20 to get -100? (ii) -60 to get 300?
(iii) -55 to get -110?
(iv) -85 to get 0?

10) Find the result when:
(i) the sum of the first four negative
integers is multiplied by the greatest
negative number
(ii) the sum of the first four positive
integers is multiplied by the sum of all
integers from – 2 to 2.​

Answer 1

Answer:

9.i)-5 ii)5 iii)2 iv)0

10.i)(-1)+(-2)+(-3)+(-4) × (-1)

=(-10) × (-1)

=10

ii)1+2+3+4 × (-1)+(-2)

=10 × (-3)

=-30

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