Question

1. Calcule:
A: (+6) + (+12)
B: (-8) + (-6)
C: (+13) + (-9)
D: (-7) + (15)
E: ( -15) - (-6)
F: (-13) - (+8)
G: (+16) - (-17)
H: (+21) - (+23)

2. Dertermine:
A: (-8)• (-5)
B: (-4) • (+6)
C: (+3) • (+6)
D: (+9) • (-10)
E: (-36) : (-4)
F: (+8) : (-2)
G: (-40): (+8)
H: (+66) : (+11)

Answer 1

1

A)(+6)+(+12)=18
B)(-8)+(-6)=-8-6=-14
C)(+13)+(-9)=13-9=4
D)(-7)+(15)=-7+15=8
E)(-15)-(-6)=-15+6=-9
F)(-13)-(+8)=-13-8=-21
G)(-16)-(-17)=-16+17=1
G)(+21)-(+23)=21-23=-2

2

A)(-8).(-5)=40
B(-4).(+6)=-24
C)(+3).(+6)=18
D)(+9).(-10)=-90
E: (-36) : (-4)=9
F: (+8) : (-2)=-4
G: (-40): (+8)=-5
H: (+66) : (+11)=6