
Activitats de Matemàtiques

Quiz
•
Mathematics
•
9th Grade
•
Hard
Albert Fabra
FREE Resource
13 questions
Show all answers
1.
OPEN ENDED QUESTION
3 mins • 1 pt
Calcula l'expressió següent: 6 x (5 - 8) - (-3) x 6 –9 -1
Evaluate responses using AI:
OFF
Answer explanation
Primer, resolvem l'expressió dins del parèntesi: 5 - 8 = -3. Després, calculem: 6 x (-3) = -18. Ara, sumem: -18 - (-18) - 9 - 1 = -18 + 18 - 9 - 1 = -10. El resultat final és -10.
2.
OPEN ENDED QUESTION
3 mins • 1 pt
Calcula l'expressió següent: -(-3) x (7-9) + ( 4-1) x 2 + 4
Evaluate responses using AI:
OFF
Answer explanation
Primer, resolvem les operacions dins dels parèntesis: 7-9 = -2 i 4-1 = 3. Així, l'expressió es converteix en -(-3) x -2 + 3 x 2 + 4. Això resulta en 6 + 6 + 4 = 16.
3.
OPEN ENDED QUESTION
3 mins • 1 pt
Fes les següents operacions: a) –2 + [8 + (-3 + 5 - 4) + 6] =
Evaluate responses using AI:
OFF
Answer explanation
Primer, resolvem l'operació dins els brackets: -3 + 5 - 4 = -2. Així, 8 + (-2) + 6 = 12. Finalment, -2 + 12 = 10. Per tant, la resposta és 10.
4.
OPEN ENDED QUESTION
3 mins • 1 pt
Fes les següents operacions: b) –(-3 - 8) + (+5 - 2) =
Evaluate responses using AI:
OFF
Answer explanation
Primer, resolvem l'expressió: -(-3 - 8) = 11. Després, +5 - 2 = 3. Finalment, sumem: 11 + 3 = 14. Per tant, la resposta és 14.
5.
OPEN ENDED QUESTION
3 mins • 1 pt
Fes les següents operacions: c) – [ -8 – (-2 + (-4))] + 5 =
Evaluate responses using AI:
OFF
Answer explanation
Primer, resolvem l'operació dins del parèntesi: -2 + (-4) = -6. Després, -8 - (-6) = -8 + 6 = -2. Finalment, -(-2) + 5 = 2 + 5 = 7. La resposta és 7.
6.
OPEN ENDED QUESTION
3 mins • 1 pt
Fes les següents operacions: d) – 2 + (3 –( 5 + 2 – 1)) + 8 =
Evaluate responses using AI:
OFF
Answer explanation
Primer, resolvem les operacions dins dels parèntesis: 5 + 2 - 1 = 6. Així, 3 - 6 = -3. Ara, substituïm: -2 + (-3) + 8 = 3. Per tant, la resposta és 3.
7.
OPEN ENDED QUESTION
3 mins • 1 pt
Fes les següents operacions: e) (7+ 5) + (-2 – 1) =
Evaluate responses using AI:
OFF
Answer explanation
Primer, calcula (7 + 5) = 12. Després, calcula (-2 - 1) = -3. Finalment, suma els resultats: 12 + (-3) = 9. Per tant, (7 + 5) + (-2 - 1) = 9.
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