$A = 16-20\div 4 + 12 =$

$B = 11-9\times 7 + 4 =$

$C = 14-6\times(-3) =$

$D = \dfrac{-20+52}{4} =$

$E = 11\times(-10)- 7 \times (-2) =$

$F = (1-9)\times(3-5) =$

$G = 3+9\div(4-7) =$

$H = -16\div(-4) -3 =$

$I = \dfrac{-50}{17-7} =$

$J = 17+6\times(-6) =$