Question

1) 256:(-16)+11(-10)
2) -3(4-20:4)

Answer 1

256 : ( - 16 ) + 11( - 10) =
     - 16 - 110 = - 126
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- 3(4 - 20 : 4 ) =
- 3 (4 - 5 ) =
- 3 ( - 1) = 3

Answer 2

1) 256:(-16)+11(-10) = -126
2) -3 (4-20:4) = 3