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1. If x ≠ , which expression is equivalent to
2
32
2
3 13 10
9 12 4
x x
x x
?
A. 3x – 2 C. –6x2 + x – 6 B. x + 5 D. –6x2 + 25x – 14
2. Which set of numbers is ordered from greatest to least?
A.
B.
15 9, 5, , 2.49
7 5
15 9, , 5,2.49
7 5
C.
D.
15 92.49, 5, ,
7 5
9 152.49, 5, ,
5 7
3. A cubic millimeter of human blood containsabout 5 x 106 red blood cells. An adulthuman body may contain about 5 x 106 cubic millimeters of blood. About how manyred blood cells does such a human bodycontain?
A.about 5 x 106 C. about 2.5 x 1012
A.about 25 x 106 D. about 2.5 x 1013
7. Which expression is closest to (7.08 x 10–7)(4.033 x 1029)?
A. 1.76 x 1022
B. 1.76 x 1023
C. 2.86 x 1022
D. 2.86 x 1023
8. Which statement best describes the valuesof the numbers in this set?
64 81 100, ,
15 19 23
A. They are between 1 and 1.5.
B. They are between 1.5 and 2.
C. They are between 2 and 2.5.
D. They are between 2.5 and 3.
9. If the value of the variable y is positive,
what is the sum of and ? 3 7y 7y
A. C.
B. D.
3 7y
4 7y
3 14y
4 14y
10. The mass of the Sun is estimated to be about 1.99 x 1030 kg, and the mass of Jupiter is estimated to be about 1.90 x 1027 kg. About how many times heavier than Jupiter is the Sun?
A. about 2 times
B. about 10 times
C. about 100 times
D. about 1,000 times
11. Which list shows the numbers arranged from greatest to least?
A.
B.
117,2.074,2.1,
5
112.074, 7,2.1,
5
112.074,2.1, , 7
5
112.074,2.1, 7,
5
C.
D.
13. Which expression is closest to (5.73 x 10–3)2 ?
A. 0.01146
B. 3.28 x 10–5
C. 32,832,900
D. 3.28 x 10–6
14. Which set of numbers is ordered from least to greatest?
A.
B.
C.
D.
27 17, 19,4.31,
6 4
17 27, 19,4.31,
4 6
17 27,4.31, 19,
4 6
17 27,4.31, , 19
4 6
15. If the value of the variable x is positive, simplify the expression.
7 2 5 2 2x x x
A. C.
B. D.
11 2x
13 2x
12 2x
11 6x
1. If x ≠ , which expression is equivalent to
2
32
2
3 13 10
9 12 4
x x
x x
?
A. 3x – 2 C. –6x2 + x – 6 B. x + 5 D. –6x2 + 25x – 14
2. Which set of numbers is ordered from greatest to least?
A.
B.
15 9, 5, , 2.49
7 5
15 9, , 5,2.49
7 5
C.
D.
15 92.49, 5, ,
7 5
9 152.49, 5, ,
5 7
3. A cubic millimeter of human blood containsabout 5 x 106 red blood cells. An adulthuman body may contain about 5 x 106 cubic millimeters of blood. About how manyred blood cells does such a human bodycontain?
A.about 5 x 106 C. about 2.5 x 1012
A.about 25 x 106 D. about 2.5 x 1013
7. Which expression is closest to (7.08 x 10–7)(4.033 x 1029)?
A. 1.76 x 1022
B. 1.76 x 1023
C. 2.86 x 1022
D. 2.86 x 1023
8. Which statement best describes the valuesof the numbers in this set?
64 81 100, ,
15 19 23
A. They are between 1 and 1.5.
B. They are between 1.5 and 2.
C. They are between 2 and 2.5.
D. They are between 2.5 and 3.
9. If the value of the variable y is positive,
what is the sum of and ? 3 7y 7y
A. C.
B. D.
3 7y
4 7y
3 14y
4 14y
10. The mass of the Sun is estimated to be about 1.99 x 1030 kg, and the mass of Jupiter is estimated to be about 1.90 x 1027 kg. About how many times heavier than Jupiter is the Sun?
A. about 2 times
B. about 10 times
C. about 100 times
D. about 1,000 times
11. Which list shows the numbers arranged from least to greatest?
A.
B.
117,2.074,2.1,
5
112.074, 7,2.1,
5
112.074,2.1, , 7
5
112.074,2.1, 7,
5
C.
D.
13. Which expression is closest to (5.73 x 10–3)2 ?
A. 0.01146
B. 3.28 x 10–5
C. 32,832,900
D. 3.28 x 10–6
14. Which set of numbers is ordered from least to greatest?
A.
B.
C.
D.
27 17, 19,4.31,
6 4
17 27, 19,4.31,
4 6
17 27,4.31, 19,
4 6
17 27,4.31, , 19
4 6
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