Perform the indicated operation of the following integers.

1) -23 + (-8) =

2) -5 x -3 =

3) -19 + 6 =

4) -56 ÷ 8 =

5) (-4) x (-8) =

6) -13 – 20 =

7) -12 + (-11) =

8) -20 ÷ -10 =

9) 3 – (-12) =

10) -24 + 19 =