Deductive Reasoning Practice
Authored by Kristopher Cook
Other
6th - 8th Grade
CCSS covered
Used 9+ times
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30 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
All mammals are warm-blooded animals.
A dog is a mammal.
Therefore, a dog is a warm-blooded animal.
Valid (logical): IF the premises are true, the conclusion MUST be true
Sound: Valid AND the premises are actually true
Invalid (illogical): Possible for the premises to be true and conclusion false
Tags
CCSS.RI.6.1
CCSS.RI.8.8
CCSS.RL.8.1
CCSS.RI.7.8
CCSS.RI.6.8
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
No fish can fly.
A salmon is a fish.
Therefore, a salmon cannot fly.
Valid (logical): IF the premises are true, the conclusion MUST be true
Sound: Valid AND the premises are actually true
Invalid (illogical): Possible for the premises to be true and conclusion false
Tags
CCSS.RI.6.1
CCSS.RI.8.8
CCSS.RI.7.1
CCSS.RI.7.8
CCSS.RL.6.1
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Some students are good at math.
John is a student.
Therefore, John is good at math.
Valid (logical): IF the premises are true, the conclusion MUST be true
Sound: Valid AND the premises are actually true
Invalid (illogical): Possible for the premises to be true and conclusion false
Tags
CCSS.RI.6.1
CCSS.RL.8.1
CCSS.RI.7.1
CCSS.RI.6.8
CCSS.RL.7.1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
All cats are good swimmers.
My pet dog is a cat.
Therefore, my pet dog is a good swimmer.
Valid (logical): IF the premises are true, the conclusion MUST be true
Sound: Valid AND the premises are actually true
Invalid (illogical): Possible for the premises to be true and conclusion false
Tags
CCSS.RI.6.1
CCSS.RI.8.8
CCSS.RL.8.1
CCSS.RI.7.8
CCSS.RI.6.8
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
All roses are flowers.
Some beautiful plants are flowers.
Therefore, some beautiful plants are roses.
Valid (logical): IF the premises are true, the conclusion MUST be true
Sound: Valid AND the premises are actually true
Invalid (illogical): Possible for the premises to be true and conclusion false
Tags
CCSS.RI.6.1
CCSS.RI.8.8
CCSS.RI.7.1
CCSS.RI.7.8
CCSS.RI.8.1
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If it rains, the ground gets wet.
It is raining.
Therefore, the ground is getting wet.
Valid (logical): IF the premises are true, the conclusion MUST be true
Sound: Valid AND the premises are actually true
Invalid (illogical): Possible for the premises to be true and conclusion false
Tags
CCSS.RI.8.8
CCSS.RI.7.1
CCSS.RI.7.8
CCSS.RI.6.8
CCSS.RL.7.1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Many people like chocolate.
Sarah is a person.
Therefore, Sarah likes chocolate.
Valid (logical): IF the premises are true, the conclusion MUST be true
Sound: Valid AND the premises are actually true
Invalid (illogical): Possible for the premises to be true and conclusion false
Tags
CCSS.RI.6.1
CCSS.RI.8.8
CCSS.RI.7.8
CCSS.RI.6.8
CCSS.RL.7.1
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