Question

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a)(+2/5)+(-1/3)=


b)(+3/5)+(-1/3)+(-2/5)=


c)(+0,1)+(-1,1)+(+0,11)=


d) (+2/5)-(+1/4)=


e)(-5/8)-(+3/8)=


f) (+1/4)-(-1/2)=


g) (-0,54)-(-0,6)=


h) (-1/4)-(1/8)=


i) (-4/5)-(+3,8)=

Answer 1

a) $\frac{2}{5} - \frac{1}{3} = \frac{6-5}{15} = \frac{1}{15}$
b)$\frac{3}{5} - \frac{1}{3} - \frac{2}{5} = \frac{9-5-6}{15} =- \frac{2}{15}$
$c) \frac{1}{10} - \frac{11}{10} + \frac{11}{100} = \frac{10-110+11}{100} = \frac{89}{100} =0,89$
$d) \frac{2}{5} - \frac{1}{4} = \frac{8-5}{20} = \frac{3}{20}$
$e) -\frac{5}{8} - \frac{3}{8} = \frac{-5-3}{8} = \frac{-8}{8} = -1$
$f) \frac{1}{4} + \frac{1}{2} = \frac{1+2}{4} = \frac{3}{4}$
$g) - \frac{54}{100} + \frac{6}{10} = \frac{-54+60}{100} = \frac{6}{100}= 0,06$
$h) - \frac{1}{4} - \frac{1}{8} = \frac{-2-1}{8} = -\frac{3}{8}$
$i)- \frac{4}{5} - \frac{38}{10} = \frac{-8-38}{10} = \frac{-46}{10} = - 4,6$