CBEST Mathematics 4 — Questions and Answers
Question 1: What is the median of the data set: 3, 7, 9, 12, 15?
- 7
- 9 (Correct answer)
- 10
- 12
Correct answer: 9
The median is the middle value of an ordered set; here it is 9.
Question 2: A savings account earns simple interest at 4% per year. How much interest does $500 earn in 3 years?
- $40
- $50
- $60 (Correct answer)
- $70
Correct answer: $60
Simple interest = P × r × t = 500 × 0.04 × 3 = $60.
Question 3: Which of the following is the largest number?
- 0.45
- 9/20 (Correct answer)
- 44%
- 4/9
Correct answer: 9/20
9/20 = 0.45 and 4/9 ≈ 0.444, while 44% = 0.44; all are equal or 9/20 ties 0.45, but 9/20 = 0.45 is equal to 0.45 and larger than 44% and 4/9.
Question 4: A map has a scale of 1 inch = 50 miles. Two cities are 3.5 inches apart on the map. What is the actual distance?
- 150 miles
- 175 miles (Correct answer)
- 200 miles
- 225 miles
Correct answer: 175 miles
3.5 × 50 = 175 miles.
Question 5: If y = 3x − 2 and x = 4, what is y?
- 8
- 10 (Correct answer)
- 12
- 14
Correct answer: 10
y = 3(4) − 2 = 12 − 2 = 10.
Question 6: What is the least common multiple (LCM) of 4 and 6?
- 6
- 10
- 12 (Correct answer)
- 24
Correct answer: 12
The smallest number divisible by both 4 and 6 is 12.
Question 7: A worker earns $15.50 per hour and works 38 hours in a week. What are the worker's gross earnings?
- $570.00
- $579.00
- $589.00 (Correct answer)
- $604.50
Correct answer: $589.00
15.50 × 38 = $589.00.
CBEST Mathematics 4
What is the median of the data set: 3, 7, 9, 12, 15?