Grade 8 Syllogism Worksheet
A worksheet for 8th graders to practice identifying and analyzing syllogisms, including premises and conclusions.
Includes
Standards
Topics
Syllogism Practice
Name:
Date:
Score:
Read each question carefully and follow the instructions. This worksheet will help you understand and identify syllogisms, their premises, and conclusions.
A syllogism is a type of logical argument that applies deductive reasoning to arrive at a conclusion based on two or more propositions that are asserted or assumed to be true. It typically consists of three parts:
1. **Major Premise:** A general statement.
2. **Minor Premise:** A specific statement related to the major premise.
3. **Conclusion:** A statement that logically follows from the two premises.
Example: Major Premise: All humans are mortal. Minor Premise: Socrates is a human. Conclusion: Therefore, Socrates is mortal.
1. Which of the following is an example of a valid syllogism?
All birds can fly. A penguin is a bird. Therefore, a penguin can fly.
All dogs are mammals. Fido is a dog. Therefore, Fido is a mammal.
Some students like math. Mary is a student. Therefore, Mary likes math.
If it rains, the ground gets wet. The ground is wet. Therefore, it rained.
2. Complete the following syllogism by filling in the blank with the correct conclusion:
Major Premise: All musicians are artists. Minor Premise: Sarah is a musician. Conclusion: Therefore, .
3. Identify the major premise in the following syllogism:
All mammals have fur. A cat is a mammal. Therefore, a cat has fur. Major Premise:
4. Explain why the following syllogism is invalid: Major Premise: All flowers have petals. Minor Premise: This object has petals. Conclusion: Therefore, this object is a flower.
5. A syllogism always consists of two premises and one conclusion.
True
False
6. For a syllogism to be valid, its premises must always be true.
True
False