
Fração professora Mell 1
Quiz
•
Mathematics
•
7th Grade
•
Hard
GRICEL OLIVEIRA
Used 2+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Answer explanation
Para multiplicar as frações, multiplicamos os numeradores e os denominadores: \(\frac{2 \times 4}{3 \times 5} = \frac{8}{15}\). Portanto, a resposta correta é \(\frac{8}{15}\).
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Answer explanation
Para dividir frações, multiplicamos a primeira pela inversa da segunda: \( \frac{7}{8} \times \frac{3}{2} = \frac{21}{16} \). Portanto, a resposta correta é \( \frac{21}{16} \).
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Answer explanation
Para simplificar a fração \( \frac{18}{24} \), dividimos o numerador e o denominador pelo seu maior divisor comum, que é 6. Assim, \( \frac{18 \div 6}{24 \div 6} = \frac{3}{4} \). Portanto, a resposta correta é \( \frac{3}{4} \).
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Answer explanation
Para multiplicar as frações, multiplicamos os numeradores e os denominadores: \( \frac{5 \times 3}{6 \times 4} = \frac{15}{24} \). A resposta correta é \( \frac{15}{24} \).
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Answer explanation
Para dividir frações, multiplicamos a primeira pela inversa da segunda: \( \frac{9}{10} \times \frac{5}{3} = \frac{9 \times 5}{10 \times 3} = \frac{45}{30} = \frac{3}{2} \). Portanto, a resposta correta é \( \frac{3}{2} \).
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Answer explanation
Para simplificar a fração \( \frac{45}{60} \), encontramos o maior divisor comum (MDC) de 45 e 60, que é 15. Dividindo ambos os termos por 15, obtemos \( \frac{3}{4} \), que é a fração simplificada correta.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Answer explanation
Para multiplicar frações, multiplicamos os numeradores e os denominadores: \(\frac{1 \times 3}{2 \times 7} = \frac{3}{14}\). Portanto, a resposta correta é \(\frac{3}{14}\).
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