Question

Answer 1

`14xx230+7xx540`

`=7xx2xx230+540xx7`

`=7xx(460+540)`

`=7xx 1000`

`=7000`

Answer 2

`14xx230+7xx540`

`=7xx2xx230+7xx540`

`=7xx460+7xx540`

`=7xx(460+540)`

`=7xx1000=7000`

Answer 3

` 14 xx 230 + 7 xx 540`

` = 2 xx 7 xx 230 + 7 xx 540`

` = 7 xx ( 230 xx 2) + 7 xx 540`

` =7 xx 460 + 7 xx 540`

` = 7 xx ( 460 + 540)`

` = 7 xx 1000`

` = 7000`

Answer 4

Answer 5

=7x2x230+540x7

=7x(460+540)

=7x1000

=7000.