NWEA Math 3 — Questions and Answers
Question 1: What is the least common multiple (LCM) of 4 and 6?
- 2
- 10
- 12 (Correct answer)
- 24
Correct answer: 12
Multiples of 4: 4, 8, 12… Multiples of 6: 6, 12… The LCM is 12.
Question 2: A triangle has angles measuring 55° and 75°. What is the measure of the third angle?
- 40°
- 50° (Correct answer)
- 55°
- 70°
Correct answer: 50°
The angles of a triangle sum to 180°: 180 − 55 − 75 = 50°.
Question 3: Which expression represents 'five less than twice a number n'?
- 5 − 2n
- 2n − 5 (Correct answer)
- 2(n − 5)
- 5n − 2
Correct answer: 2n − 5
'Twice a number' is 2n, and 'five less than' means subtract 5, giving 2n − 5.
Question 4: What is 15% of 200?
- 20
- 25
- 30 (Correct answer)
- 35
Correct answer: 30
15% of 200 = 0.15 × 200 = 30.
Question 5: A data set has values: 3, 7, 7, 9, 14. What is the median?
- 7 (Correct answer)
- 8
- 9
- 10
Correct answer: 7
Listed in order, the middle (3rd) value of five numbers is 7.
Question 6: Which number is NOT a prime number?
- 11
- 13
- 27 (Correct answer)
- 29
Correct answer: 27
27 = 3 × 9, so it has factors other than 1 and itself and is not prime.
Question 7: A car travels at 55 miles per hour. How far will it travel in 3 hours?
- 150 miles
- 160 miles
- 165 miles (Correct answer)
- 170 miles
Correct answer: 165 miles
Distance = speed × time = 55 × 3 = 165 miles.
NWEA Math 3
What is the least common multiple (LCM) of 4 and 6?