12.Practice.Tests.for.the.SAT_2015-2016_1128p

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12 Practice Tests for the SAT
Practice Test Ten Answers and Explanations
Getting to the Answer:
Say P = 1, Q = 3, and R = 5.
1 + 3 = 4, which is even, so (A) is true
1 + 3 + 5 = 9, which is odd, so (B) is true
3. c
5 - 1 = 4, which is even, so (C) is true
1
; 3 = 2, which is even, so (D) is true
1
; 5 = 3, which is odd, so (E) is not true
Difficulty: Low
Strategic Advice: Draw out what's described in the stem;
you'll then quickly see what's at issue in getting to the
solution.
Getting to the Answer:
The 1 2 angles form a circle. The total number of degrees in
a circle is 360°.
360° -;- 12 = 30°
4. D
Difficulty: Medium
Strategic Advice: Some questions aren't conceptually
complex; instead, they test your ability to work meticulously.
So do so-but also move quickly.
Getting to the Answer:
m
1 -1 1
= =
_1_
-2 2
n=-_1_
3
m + n =
+ (-t) - i i-i i
= = =
5. A
Difficulty: Medium
Strategic Advice: This is merely a dressed-up substitution
question. Replace p with 2, then simplify the expression.
Getting to the Answer:
2q(7 - 6[2]) = 2q(7 - 12) = 2q(-5) = - 1 Oq
6. E
Difficulty: Medium
Strategic Advice: Know the major translations between
English and math. Of signifies multiplication, for example.
Getting to the Answer:
(0.50)(0.40)x = 22.8
7. D
x =
0.20x=22.8
22·8
= 114
0.20
Difficulty: Medium
Strategic Advice: Early in the test, you will probably
encounter some questions, like this one, that test your
ability to make accurate calculations. Write quickly but
carefully to ensure that you can keep track of the terms
you use.
Getting to the Answer:
Multiply each term in (2x2 + 5x - 3) by each term in ( 4x - 1 ):
2x2(4x- 1) +5x(4x- 1)-3(4x- 1)
8x3 - 2x2 + 20x2 - 5x - 12x + 3
b is the coefficient of x2.
b=-2+20= 18
8. B
Difficulty: Medium
Strategic Advice: Define and keep your eye on exactly
what's asked of you. In this question, don't stop when you
find the intersection of the two sets; you need the number
of elements in the intersection, not the specific elements
themselves.
Getting to the Answer:
= {-3, -2, -1, 0, 1, 2, 3}
= (1, 2, 3, 4, 5, 6}
Intersection = {1, 2, 3}
That's three elements.
(A) -1, 0, 1 (3 elements); (B) 0, 1, 2, 3 ( 4 elements); (C)
-2, -1, O (3 elements); (D) 4, 5, 6 (3 elements); (E) 2, 3,
4 (3 elements)
9. E
Difficulty: Medium
Strategic Advice: Recognize the difference between part-topart
and part-to-whole ratios and be able to toggle between
one type and the other; on Test Day, at least one question
will hinge on your ability to do so.