
Cálculos com Números Reais
Mathematics
8th Grade
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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Answer explanation
Para calcular -4,5 + 2,3, somamos os números: -4,5 + 2,3 = -2,2. Portanto, a resposta correta é -2,2.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Answer explanation
Para resolver -3,5 - 2,5, subtraímos os valores: -3,5 - 2,5 = -6,0. Portanto, a resposta correta é -6,0.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Answer explanation
O produto de 2,5 e 4 é calculado como 2,5 \times 4 = 10,0. Portanto, a resposta correta é 10,0.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Answer explanation
Para calcular -3 vezes 2,5, multiplicamos os números: -3 x 2,5 = -7,5. Portanto, a resposta correta é -7,5.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Answer explanation
Para resolver $12 \div 3$, dividimos 12 por 3. O resultado é 4, pois 3 cabe 4 vezes em 12. Portanto, a resposta correta é $4$.
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