O cálculo de 75% é o mesmo que $$\frac{3}{4}$$ , sendo assim:

Dividimos o valor por 4 e multiplicamos por 3.

Multiplicamos o valor por 4 e dividimos por 3.

Apenas Multiplicamos o valor por 4.

Apenas Dividimos o valor por 4.

Números racionais Questionário

17 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 4 pts

Calcule:
$\frac{5}{4}+\frac{3}{6}$

$\frac{8}{10}$

$\frac{4}{5}$

$\frac{21}{12}$

$\frac{1}{2}$

2.

MULTIPLE CHOICE QUESTION

1 min • 4 pts

Simplificando a fração $\frac{24}{36}$ obtemos

$\frac{1}{2}$

$\frac{1}{3}$

$\frac{2}{3}$

$\frac{1}{6}$

3.

MULTIPLE CHOICE QUESTION

1 min • 4 pts

O resultado da operação $1-\frac{3}{5}=$ é:

$\frac{2}{5}$

$\frac{3}{5}$

$\frac{13}{5}$

$\frac{7}{5}$

4.

FILL IN THE BLANKS QUESTION

1 min • 4 pts

Calcule e escreva o resultado:
$\left(-\frac{4}{3}\right)^2$

(a)

5.

MULTIPLE CHOICE QUESTION

1 min • 4 pts

CAlcule:
$\left(-\frac{8}{7}\right)+\left(-\frac{1}{6}\right)=$

$-\frac{55}{42}$

$-\frac{9}{13}$

$\frac{9}{13}$

$-\frac{9}{42}$

6.

MULTIPLE CHOICE QUESTION

1 min • 4 pts

Cálcule:
$\left(\frac{2}{9}\right)+\left(-\frac{3}{10}\right)=$

$-\frac{7}{90}$

$-\frac{5}{19}$

$\frac{5}{19}$

$-\frac{5}{90}$

7.

MULTIPLE CHOICE QUESTION

1 min • 4 pts

Qual o resultado desta operação:
0,25 : 0,01?

250

25

2500

2,5

8.

MULTIPLE CHOICE QUESTION

1 min • 4 pts

Encontre o resultado de: $\frac{2}{3}+\frac{1}{6}-\frac{3}{4}$

$-\frac{3}{12}$

$-\frac{1}{12}$

$\frac{1}{12}$

$\frac{3}{12}$

9.

MULTIPLE CHOICE QUESTION

1 min • 4 pts

$\frac{6}{5}\div\left(-\frac{2}{9}\right)$
é igual a ...

-5,4

5,4

$-\frac{5}{27}$

$\frac{5}{27}$

10.

MULTIPLE CHOICE QUESTION

1 min • 4 pts

$-\frac{13}{11}\div\left(-\frac{13}{22}\right)$ é igual a ...

-2

$-\frac{169}{242}$

2

$\frac{169}{242}$

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Números racionais

Calcule: 54+36\frac{5}{4}+\frac{3}{6}45​+63​

Simplificando a fração 2436\frac{24}{36}3624​ obtemos

O resultado da operação 1−35=1-\frac{3}{5}=1−53​= é:

Calcule e escreva o resultado: (−43)2\left(-\frac{4}{3}\right)^2(−34​)2 (a)

CAlcule: (−87)+(−16)=\left(-\frac{8}{7}\right)+\left(-\frac{1}{6}\right)=(−78​)+(−61​)=

Cálcule: (29)+(−310)=\left(\frac{2}{9}\right)+\left(-\frac{3}{10}\right)=(92​)+(−103​)=

Qual o resultado desta operação:0,25 : 0,01?

Encontre o resultado de: 23+16−34\frac{2}{3}+\frac{1}{6}-\frac{3}{4}32​+61​−43​

65÷(−29)\frac{6}{5}\div\left(-\frac{2}{9}\right)56​÷(−92​) é igual a ...

−1311÷(−1322)-\frac{13}{11}\div\left(-\frac{13}{22}\right)−1113​÷(−2213​) é igual a ...

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Discover more resources for Mathematics

Calcule:
$\frac{5}{4}+\frac{3}{6}$

Simplificando a fração $\frac{24}{36}$ obtemos

O resultado da operação $1-\frac{3}{5}=$ é:

Calcule e escreva o resultado:
$\left(-\frac{4}{3}\right)^2$

(a)

CAlcule:
$\left(-\frac{8}{7}\right)+\left(-\frac{1}{6}\right)=$

Cálcule:
$\left(\frac{2}{9}\right)+\left(-\frac{3}{10}\right)=$

Qual o resultado desta operação:
0,25 : 0,01?

Encontre o resultado de: $\frac{2}{3}+\frac{1}{6}-\frac{3}{4}$

$\frac{6}{5}\div\left(-\frac{2}{9}\right)$
é igual a ...

$-\frac{13}{11}\div\left(-\frac{13}{22}\right)$ é igual a ...