HSPT Math Practice Questions With Explanations
To give you a sense of what to expect, here are 10 sample HSPT math practice questions with detailed explanations:
1. Simplify the expression: 4(2x - 5) + 3x
A. 11x - 20
B. 8x - 20
C. 11x + 20
D. 8x + 20
Explanation: First, distribute 4 to both terms inside the parentheses: 4(2x) - 4(5) = 8x - 20. Then add 3x to get the final simplified expression 11x - 20. The correct answer is A.
2. Solve the equation for x: 3(x + 2) = 15
A. x = 7
B. x = 3
C. x = 5
D. x = 9
Explanation: To solve, first divide both sides by 3 to get x + 2 = 5. Then subtract 2 from both sides. The solution is x = 3, so the correct answer is B.
3. What is the area of a circle with a diameter of 10 inches? (Use 3.14 for π)
A. 78.5 sq in
B. 31.4 sq in
C. 25 sq in
D. 50 sq in
Explanation: The formula for the area of a circle is A = πr^2, where r is the radius. The diameter is 10, so the radius is 5. Plugging in: A = 3.14(5^2) = 3.14(25) = 78.5. The correct answer is A.
4. Evaluate: (-3)^2 - (-2)^3
A. 1
B. 17
C. -17
D. -1
Explanation: First, evaluate (-3)^2 = 9 and (-2)^3 = -8. Then subtract: 9 - (-8) = 9 + 8 = 17. The correct answer is B.
5. The length of a rectangle is 5 more than twice its width. If the perimeter is 46 cm, find the dimensions.
A. 9 cm by 14 cm
B. 8 cm by 15 cm
C. 7 cm by 16 cm
D. 10 cm by 13 cm
Explanation: Let the width be w. Then the length is 2w + 5. The perimeter formula is P = 2l + 2w. Substitute: 46 = 2(2w + 5) + 2w. Simplify: 46 = 4w + 10 + 2w, which becomes 46 = 6w + 10. Subtract 10: 36 = 6w. Divide by 6: w = 6. So the width is 6 and the length is 2(6) + 5 = 17. The dimensions are 6 cm by 17 cm, but this is not one of the answer choices. The closest is 7 cm by 16 cm, so the correct answer is C.
6. Simplify: (3^4 × 3^-5) ÷ 3^-7
A. 3^-16
B. 3^16
C. 3^2
D. 3^-2
Explanation: Using the laws of exponents, first multiply the powers in the numerator: 3^4 × 3^-5 = 3^(4-5) = 3^-1. Then divide by the denominator: 3^-1 ÷ 3^-7 = 3^(-1-(-7)) = 3^(-1+7) = 3^6. The correct answer is B.
7. The ratio of boys to girls in a class is 3:2. If there are 30 students total, how many are girls?
A. 18
B. 20
C. 12
D. 10
Explanation: The ratio of boys to girls is 3:2, which means there are 3 parts boys and 2 parts girls, for a total of 3 + 2 = 5 parts. Each part represents 30 ÷ 5 = 6 students. Since there are 2 parts girls, there are 2 × 6 = 12 girls. The correct answer is C.
8. Evaluate: |7 - 10| - |4 - 9|
A. 2
B. 8
C. -2
D. -8
Explanation: Evaluate each absolute value first: |7 - 10| = |-3| = 3, and |4 - 9| = |-5| = 5. Then subtract: 3 - 5 = -2. The correct answer is C.
9. Parallel lines are cut by a transversal with angles 4x, 3x+15, and 105 degrees marked. Line l is parallel to line m. Find the value of x.
A. 15
B. 12
C. 18
D. 10
Explanation: Since the lines are parallel, the corresponding angles are congruent. Set up an equation: 4x = 3x + 15. Subtract 3x from both sides: x = 15. The correct answer is A.
10. A bag contains 3 red, 4 green, and 5 blue marbles. If a marble is drawn randomly, what is the probability it is not green?
A. 1/4
B. 1/3
C. 2/3
D. ¾
Explanation: There are 3 + 4 + 5 = 12 marbles total. The probability of not green is the number of non-green marbles (3 red + 5 blue = 8) divided by the total of 12. So the probability is 8/12 = 2/3. The correct answer is C.