Top 10 SAT Math Practice Questions

Top 10 SAT Math Practice Questions

Preparing for the SAT Math test? The best way to prepare for your SAT Math test is to work through as many SAT Math practice questions as possible. Here are the top 10 SAT Math practice questions to help you review the most important SAT Math concepts. These SAT Math practice questions are designed to cover mathematics concepts and topics that are found on the actual test. The questions have been fully updated to reflect the latest 2020 SAT guidelines. Answers and full explanations are provided at the end of the post.

Start your SAT Math test prep journey right now with these sample SAT Math questions.

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SAT Math Practice Questions

1- If \(\frac{x – 3}{5} =\) N and N = 6, what is the value of \(x\)?

☐A. 25

☐B. 28

☐C. 30

☐D. 33

2- If \(x + y = 0\), \(4x – 2y = 24\), which of the following ordered pairs \((x, y)\) satisfies both equations?

☐A. (4,3)

☐B. (5,4)

☐C. (4,-4)

☐D. (4,-6)

3- On Saturday, Sara read N pages of a book each hour for 3 hours, and Mary read M pages of a book each hour for 4 hours. Which of the following represents the total number of pages of book read by Sara and Mary on Saturday?

☐A. \(12MN\)

☐B. \(3N + 4M\)

☐C. \(7MN\)

☐D. \(4N + 3M\)

4- A line in the \(xy\)-plane passes through origin and has a slope of \(\frac{1}{3}\). Which of the following points lies on the line?

☐A. (2,1)

☐B. (4,1)

☐C. (9,3)

☐D. (6,3)

5- If function is defined as \(f(x)=bx^2+15\), and b is a constant and \(f(2) = 35\). What is the value of \(f(3)\)?

☐A. 25

☐B. 35

☐C. 60

☐D. 65

6- If \((ax+4)(bx+3)=10x^2+cx+12\) for all values of \(x\) and \(a + b = 7\), what are the two possible values for c?

☐A. 22, 21

☐B. 20, 22

☐C. 23, 26

☐D. 24, 23

7- If \(x≠-4\) and \(x≠5\), which of the following is equivalent to \(\frac{1}{\frac{1}{x – 5} + \frac{1}{x + 4}}\)?

☐A. \(\frac{(x-5)(x+4)}{(x-5)+(x+4)}\)

☐B. \(\frac{(x+4)+(x-5)}{(x+4)(x-5)}\)

☐C. \(\frac{(x+4)(x-5)}{(x+4)-(x+5)}\)

☐D. \(\frac{(x+4)+(x-5)}{(x+4)-(x-5)}\)

8- What is the sum of all values of n that satisfies \(2n^2+16n+24=0\)?

☐A. 8

☐B. 4

☐C. \(-4\)

☐D. \(-8\)

9- For \(i=\sqrt {(-1)}\), what is the value of \(\frac{3+2i}{5+i}\)

☐A. \(i\)

☐B. \(\frac{32i}{5}\)

☐C. \(\frac{17-i}{5}\)

☐D. \(\frac{17+7i}{26}\)

10- Calculate \(f(5)\) for the following function \(f\).
\(f(x)=x^2-3x\)

☐A. 5

☐B. 10

☐C. 15

☐D. 20

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Answers:

1- D
Since N=6, substitute 6 for N in the equation \(\frac{x – 3}{5} = N\), which gives \(\frac{x – 3}{5} = 6\).
Multiplying both sides of \(\frac{x – 3}{5}) = 6\) by 5 gives \(x – 3 = 30\)
and then adding 3 to both sides of \(x – 3 = 30\) then, \( x = 33\)

2- C
Method 1: Plugin the values of \(x\) and \(y\) provided in the options into both equations.
\( (4,3) → x+y=0→4+3≠0\)
\((5,4) → x+y=0→5+4≠0\)
\((4,-4) →x+y=0→4+(-4)=0\)
\((4,-6) →x+y=0→4+(-6)≠0\)
Only option C is correct.

3- B
The total number of pages read by Sara is 3 (hours she spent reading) multiplied by her rate of reading: \(N \ \frac{pages}{hour }× 3hours = 3N\)
Similarly, the total number of pages read by Mary is 4 (hours she spent reading) multiplied by her rate of reading:
\(M \space \frac{pages}{hour}× 4hours =4M \)
the total number of pages read by Sara and Mary is the sum of the total number of pages read by Sara and the total number of pages read by Mary: \(3N+4M\)

4- C
First, find the equation of the line. All lines through the origin are of the form \(y = mx\), so the equation is \(y=\frac{1}{3}x\). Of the given choices, only choice C (9,3), satisfies this equation:
\(y=\frac{1}{3}x→3=\frac{1}{3}(9)=3\)

5- C
First find the value of b, and then find \(f(3)\).
Since \(f(2) = 35\), substuting 2 for \(x\) and 35 for \(f(x)\) gives (35=b(2)^2+15=4b+15).
Solving this equation gives b = 5. Thus
\( f(x)=5x^2+15\)
\(f(3)=5(3)^2+15→f(3)=45+15\)
\( f(3)=60\)

6- C
You can find the possible values of a and b in \((ax + 4)(bx + 3)\) by using the given equation \(a + b = 7\) and finding another equation that relates the variables a and b.
Since \((ax+4)(bx+3)=10x^2+cx+12\), expand the left side of the equation to obtain \(abx^2+4bx+3ax+12=10x^2+cx+12\)
Since ab is the coefficient of \(x^2\) on the left side of the equation and 10 is the coefficient of \(x^2\) on the right side of the equation, it must be true that \(ab=10\)
The coefficient of x on the left side is \(4b + 3a\) and the coefficient of \(x\) in the right side is c. Then:
\(4b+3a=c\)
\(a + b = 7\), then: \(a = 7 – b\)
Now, plug in the value of a in the equation \(ab = 10\). Then:
\(ab=10→(7-b)b=10→7b-b^2=10\)
Add \(-7b+b^2\) both sides. Then:
\(b^2-7b+10=0\)
Solve for \(b\) using the factoring method.
\(b^2-7b+10=0→(b-5)(b-2)=0\)
Thus, either \(b=2\) and \(a = 5\), or \(b = 5\) and \(a = 2\). If \(b = 2\) and \(a = 5\), then:
\(4b+3a=c→4(2)+3(5)=c→c=23\)
If 5 = 2 and a = 2, then
\(4b+3a=c→4(5)+3(2)=c→c=26\)
Therefore, the two possible values for c are 23 and 26.

7- A
To rewrite \(\frac{1}{\frac{1}{x – 5} + \frac{1}{x + 4}}\), first simplify \(\frac{1}{x – 5} + \frac{1}{x + 4}\)
\(\frac{1}{x – 5} + \frac{1}{x + 4}= \frac{1(x+4)}{(x-5)(x+4)}+ \frac{1(x-5)}{(x+4)(x-5)}=\frac{(x+4)+(x-5)}{(x+4)(x-5)}\)
Then:
\(\frac{1}{\frac{1}{x – 5} + \frac{1}{x + 4}}= \frac{1}{\frac{(x+4)+(x-5)}{(x+4)(x-5)}
}= \frac{(x-5)(x+4)}{(x-5)+(x+4)}\)
(Remember, \(\frac{1}{\frac{1}{x}} = x\))
This result is equivalent to the expression in choice A.

8- D
The problem asks for the sum of the roots of the quadratic equation (2n^2+16n+24=0). Dividing each side of the equation by 2 gives (n^2+8n+12=0).
If the roots of \(n^2+8n+12=0\) are \(n_{1}\) and \(n_{2}\),
then the equation can be factored as \(n^2+8n+12=(n – n_{1})(n – n_{2} )=0\).
Looking at the coefficient of n on each side of \(n^2+8n+12 = (n + 6)(n+2)\) gives \(n=-6\) or \(n=-2\)
then,
\(-6+(-2)=-8\)

9- D
To perform the division \(\frac{3 + 2i}{5+i}\), multiply the numerator and denominator of \(\frac{3+2i}{5+1i}\) by the conjugate of the denominator, \(5 – i\).
This gives \(\frac{(3+2i)(5-i)}{(5+1i)(5-i)}=\frac{15-3i+10i-2i^2}{5^2-i^2}\).
Since \(i^2=-1\), this can be simplified to
\(\frac{15-3i+10i+2}{25+1}=\frac{17+7i}{26}\).

10- B
The input value is 5. Then: \(x = 5\)
\(f(x)=x^2-3x→ f(5)=5^2-3(5)=25-15=10\)

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