A) (-0,45)+(-1,6)+(+2,81)=
-0,45-1,6+2,81
R:0,76
B)(+2,7)+(-0,03)-(+5,18)=
2,7-0,03-5,18
R:-2,51
C) (-7.2)-(-1,43)+(-0,5)=
-7.2-(-1,43)+(-0,5)
-7.2-1,43-0,5
R:-6,27
D) (-3,61)-(-6,4)-(+5.12)+(+0,76)=
-3,61-6,45.12+0,76
R:-1,57
E) (2,76)+(-1.4)-(-4.25)-(+2,8)=
2,76-1.4+4.25-2,8
R:2,81
F)(-9.02)-(0.09)-(-4,73)+(+1,35)=
-9.02-0.09+4,73)+1,35
R:-3,03
G)-3,8-(-2.6)+(-1.55)+(-0.04 ) + 1.01=
-3,8+2.6-1.55-0.04+1.01=
R:-1,78
H)8,95+(-4,3)-(-2,8)+(-2,91) -0.42=
8,95-4,3+2,8-2,91-0.42=
R:4,12
espero ter ajudado
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A) (-0,45)+(-1,6)+(+2,81)=
-0,45-1,6+2,81
R:0,76
B)(+2,7)+(-0,03)-(+5,18)=
2,7-0,03-5,18
R:-2,51
C) (-7.2)-(-1,43)+(-0,5)=
-7.2-(-1,43)+(-0,5)
-7.2-1,43-0,5
R:-6,27
D) (-3,61)-(-6,4)-(+5.12)+(+0,76)=
-3,61-6,45.12+0,76
R:-1,57
E) (2,76)+(-1.4)-(-4.25)-(+2,8)=
2,76-1.4+4.25-2,8
R:2,81
F)(-9.02)-(0.09)-(-4,73)+(+1,35)=
-9.02-0.09+4,73)+1,35
R:-3,03
G)-3,8-(-2.6)+(-1.55)+(-0.04 ) + 1.01=
-3,8+2.6-1.55-0.04+1.01=
R:-1,78
H)8,95+(-4,3)-(-2,8)+(-2,91) -0.42=
8,95-4,3+2,8-2,91-0.42=
R:4,12
espero ter ajudado