Multiplying
-10 * -5=
50
40 / -2=
-20
-80 - (-40)=
-40
-20 * -3=
60
55 / -5=
-11
-10 - 2=
-12
-50 * -30=
1500
-60 / 30=
-20
30 - (-40)=
70
-80 * -80=
6400
-32 / 2=
-16
-8000 - (-3000)=
-5000
-1000 * -890
890,000
-189 / 3=
-63
55 - (-55)=
110