13 x ( - 47 ) - 53 x 13
=13x( - 47-53)
=13x(-100)
=-1300
27 x ( - 67 ) + 33 x ( - 27 )
=27x[(- 67)+(-33)]
=27x(-100)
=-2700
- 49 x 65 + 36 x ( - 49 ) + 49
=- 49x(65+36-1)
=-49x100
=-4900
136 x ( - 47 ) + 36 x 47
=-47x(136-36)
=-47x100
=-4700
( - 48 ) x 72 + 36 x ( - 304 )
=( - 48 ) x 2x36 + 36 x ( - 304 )
=( -96 ) x 36 + 36 x ( - 304 )
=36x(-96-304)
=36x(-400)
=-14400