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2013-11-17T18:51:24+01:00
A = 13 x 999
=(13*1000)-(13*1)
=13000-13
=12987

B = 2 x 0.784 + 8 x 0.784
=0.784*(2+8)
=0.784*10
=7.84

C = 17 x 101
=(17*100)+(17*1)
=1700+17
=1717

D = 153 x 2.7 - 2.7 x 53
=2.7*(153-53)
=2.7*100
=270