Algebra problems on rounding decimals
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Identify the letter of the choice that best completes the statement or answers the question.
____ 1. Round off 345.0149 to three decimal places.
a. 345.015
b. 345.01
c. 345
d. None of the above
For questions 2 through 5 use the following values of X: 1, 7, 0, 8 and -6
____ 2. ∑Χ
a. 28
b. 10
c. 22
d. None of the above
____ 3. ∑Χ2
a. 150
b. 200
c. -200
d. None of the above
____ 4. (∑Χ2)
a. 100
b. 200
c. -200
d. None of the above
____ ____ 5. ∑(Χ-2)
a. 2
b. -2
c. 2 or -2
d. None of the above
For question 6 use the following values of X: 12, 10, 5 and Y: 2, -1, 5
____ 6. ∑XY
a. 33
b. 39
c. 162
d. None of the above
____ 7. Based on the table, formula below, and the fact k=3, =?
a. 2 1/3 or 2.3
b. 3.13
c. 4 2/3 or 4.67
d. None of the above
ki ei fi
1 1 0
2 3 4
3 1 2
4 5 3
5 2 2
____ 8. (-8X-8) + (-(-8)) =?
a. 72
b. 64
c. -72
d. None of the above
____ 9. Evaluate the following expression:
a. 65
b. -65
c. 32.5
d. None of the above
____ 10. X(X4)(X2) is the equivalent to
a. 7X
b. 2X6
c. X7
d. None of the above
____ 11. X1/2 equals:
a. 1/x
b. 1/X2
c.
d. None of the above
____ 12. 5-4 equals
a. 625
b. -625
c. .0016
d. None of the above
____ 13. equals?
a. 1
b. .7
c. 7
d. None of the above
____ 14. 0! equals?
a. 0
b. 1
c. Undefined
d. None of the above
____ 15. Solve for X: 12-5x=-8
a. -1
b. 4
c. -4
d. None of the above
____ 16. Solve for X:
a. -1
b. 4
c. -4
d. None of the above
____ 17. Solve for X:
a. 6
b. 5
c. 12
d. None of the above
____ 18. Solve for X:
a. 5
b. 100
c. -5
d. None of the above
____ 19. Solve for X: -4X+16Y = -24
a. 6
b. 4Y+6
c. 24+16Y
d. None of the above
____ 20. equals?
a. 9
b. 81
c. -9
d. None of the above
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Multiple Choice (20 questions)
Identify the letter of the choice that best completes the statement or answers the question.
____ 1. Round off 345.0149 to three decimal places.
a
a. 345.015
b. 345.01
c. 345
d. None of the above
For questions 2 through 5 use the following values of X: 1, 7, 0, 8 and -6
____ 2. ∑Χ
b
a. 28
b. 10
c. 22
d. None of the above
____ 3. ∑Χ2
a
a. 150
b. 200
c. -200
d. None of the above
4. ...
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