Wykonaj obliczenia : (1/2 etc. = ułamek)
a)
2,2 + (-3 1/2) =
-6,3 + (-2 2/5) =
-8 1/3 - 1,1 =
-3 3/4 - (-5,1) =
b)
2,25 - 3 1/2 =
-5 1/8 - 0,25 =
-1,34 - (-3 2/25) =
-6 2/3 - 5,75 =
c)
-1/5 - 0,5 + (-1/2) =
-3,8 + (-8 2/5) - (-6,5) =
-4,1 - 2 7/20 - 4,25 =
5 1/3 - (-2 5/6 - 12 2/3) =
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a)
1) 2,2 + (-3 1/2) = 2,2-7/2= 2,2-3,5=-1,3
2) -6,3 + (-2 2/5) = -6,3-12/5= -6,3-2,4= -8,7
3) -8 1/3 - 1,1 = -25/3-1,1= -8,33-1,1= -9,34
4) -3 3/4 - (-5,1) = -15/4+5,1= -3,75+5,1=1,35
b)
1) 2,25 - 3 1/2 = 2,25-7/2= 2,25-3,5= -1,25
2)-5 1/8 - 0,25 = -41/8-0,25= -5,125-0,25=-5,375
3) -1,34 - (-3 2/25) = -1,34+77/25= -1,34+3,08=1,74
4) -6 2/3 - 5,75 = -20/3-5,75=-6,67-5,75=-12,42
c)
1)-1/5 - 0,5 + (-1/2) = -0,2-0,5-0,5=-1,2
2)-3,8 + (-8 2/5) - (-6,5) = -3,8-42/5+6,5= -3,8-8,4+6,5=-5,7
3)-4,1 - 2 7/20 - 4,25 =-4,1-47/20-4,25=-4,1-2,35-4,25=-10,7
4)5 1/3 - (-2 5/6 - 12 2/3) = 16/3-(-17/6-38/3)=5,33-(-2,83-12,67)=5,33+15,5=20,83