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Q1:
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Which of the following mathematical systems is closed?
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A. (W, multiplication)
B. (I, division)
C. (N, subtraction)
D. (odd numbers, addition) |
Answer 1:
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Q2:
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If x is the identity for an operation •,
then a • x is equal to
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A. a
B. x
C. 0
D. 1 |
Answer 2:
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Q3:
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3 x 4 = 4 x 3 is an example of which mathematical property?
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A. associative
B. distributive
C. commutative
D. inverse |
Answer 3:
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Q4:
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If p * q = p2 + q2
the value of 2 * -3 is
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A. 13
B. -5
C. √13
D. 5 |
Answer 4:
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| Q5: |
If a * b = a2 - b then 3 * 4 is equal to: |
A. -13
B. 2
C. 5
D. 13 |
Answer 5: |
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| Q6: |
Which is an example of the commutative property? |
A. 3 x 4 = 4 x 3
B. 4 x 1 = 4
C. 4 + 0 = 4
D. 4 + -4 = 0 |
Answer 6: |
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| Q7: |
What is the identity element for the system (W, multiplication)? |
A. 0
B. -1
C. 1
D. there is not one. |
Answer 7: |
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| Q8: |
In the system (I, addition), what is the inverse of 3? |
A. 0
B. 1
C. 1/3
D. -3 |
Answer 8: |
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| Q9: |
If r • s = 2r - 4s then the value of 3 • 1 is equal to: |
A. -10
B. 2
C. -2
D. -18 |
Answer 9: |
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Q10:
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Which mathematical property does the equation
3(x + 2) = 3x + 6 show?
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A. associative
B. distributive
C. commutative
D. inverse |
Answer 10:
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