Question

calcula:

1 quarto + 3 quartos

calcula:

1 quarto - 0,25

Calcula:

6 oitavos - 5 dezaseisavos + 1 quarto


calcula: 1
$1\times \frac{1}{3} + \frac{1}{2} - (1 - \frac{1}{6} )$
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Answer 1

Resposta:

$1~~quarto~~ +~~3~~quartos=\\ \\ {1\over4}+{3\over4}={4\over4}=1$

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1 quarto - 0,25=

1 quarto → 1 ÷ 4= 0,25

0,25 - 0,25 = 0

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6  oitavos - 5 dezesseis avos + 1 quarto=

${6\over8}-{5\over16}+{1\over4}=\\ \\ mmc(8,16,4)=16\\ \\ {12-5+4\over16}={16-5\over16}={11\over16}$

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$1\times{1\over3}+{1\over2}-(1-{1\over6})=\\ \\ {1\over3}+{1\over2}-({6-1\over6})=\\ \\ {1\over3}+{1\over2}-{5\over6}=\\ \\ mmc(3,2,6)=6\\ \\ {2+3-5\over6}={5-5\over6}={0\over6}=0$