West B Test Math: Number Sense and Operations 3 — Questions and Answers
Question 1: What is the absolute value of -17?
- -17
- 17 (Correct answer)
- 1/17
- -1/17
Correct answer: 17
Absolute value measures distance from zero on a number line, so |-17| = 17.
Question 2: A recipe calls for 2½ cups of flour. If you want to make 3 batches, how many cups do you need?
- 6 cups
- 7 cups
- 7½ cups (Correct answer)
- 6½ cups
Correct answer: 7½ cups
2½ × 3 = 5/2 × 3 = 15/2 = 7½ cups.
Question 3: Which number is divisible by both 4 and 6?
- 14
- 20
- 24 (Correct answer)
- 26
Correct answer: 24
24 ÷ 4 = 6 and 24 ÷ 6 = 4, so 24 is divisible by both.
Question 4: What is the prime factorization of 60?
- 2² × 3 × 5 (Correct answer)
- 2 × 3 × 10
- 4 × 3 × 5
- 2³ × 5
Correct answer: 2² × 3 × 5
60 = 2 × 2 × 3 × 5 = 2² × 3 × 5.
Question 5: A student scored 84, 91, 76, and 89 on four tests. What is the mean score?
- 84
- 85 (Correct answer)
- 86
- 87
Correct answer: 85
(84 + 91 + 76 + 89) ÷ 4 = 340 ÷ 4 = 85.
Question 6: Which of the following is equivalent to 4.5 × 10²?
- 45
- 450 (Correct answer)
- 4500
- 0.045
Correct answer: 450
4.5 × 10² = 4.5 × 100 = 450.
Question 7: What is the GCF of 36 and 48?
- 6
- 9
- 12 (Correct answer)
- 18
Correct answer: 12
Factors of 36: 1,2,3,4,6,9,12,18,36; factors of 48: 1,2,3,4,6,8,12,16,24,48; the greatest common factor is 12.
West B Test Math: Number Sense and Operations 3
What is the absolute value of -17?