Oblicz w pamięci:
a)-12+(-11)= c) -16+3=
-50+25= 99+(-19)=
-101+(-120)= -27+31=
b)-7+42 d) -13+5,6=
-101+84= -6,2+(-2,6)=
-106+120= 0,75+(-1,3)=
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a)-12+(-11)= -23
-50+25=-25
-101+(-120)= -221
b)-7+42=35
-101+84=-17
-106+120=14
c) -16+3=-13
99+(-19)=80
-27+31=4
d) -13+5,6=-7,4
-6,2+(-2,6)=-8,8
0,75+(-1,3)=-0,55