Question

Simplify the following using brackets.
(a) 105 x 104
(b) 103 x 85
(c) 60 x 108
(d) 92 x 106​

Answer 1

Answer:

(a) 10920

(b) 8755

(c) 6480

(d) 9752

Step-by-step explanation:

(a) 105 x 104

=  (100 + 5) × (100 + 4)

=  10000 + 400 + 500 + 20

=  10920

(b) 103 x 85

=  (100 + 3) × (80 + 5)

=  8000 + 500 + 240 + 15

=  8755

(c) 60 x 108

=  60 × (100 + 8)

=  6000 + 480

=  6480

(d) 92 x 106​

=  (100 - 8) × (100 + 6)

=  10000 + 600 - 800 - 48

=  10000 - 248

=  9752

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Answer 2

Answer:

a)10920

b)8755

c)6480

d)9752