Wide Range Achievement Test Wide Range Achievement Math Computation Subtest 4 — Questions and Answers
Question 1: What is the least common multiple (LCM) of 12 and 18?
- 6
- 24
- 36 (Correct answer)
- 216
Correct answer: 36
The LCM of 12 and 18 is 36, the smallest number divisible by both.
Question 2: Solve: −4(x − 5) = 28
- x = −2 (Correct answer)
- x = 2
- x = 8
- x = −8
Correct answer: x = −2
Distribute: −4x + 20 = 28; subtract 20: −4x = 8; divide: x = −2.
Question 3: What is 2 5/6 + 1 3/4?
- 3 8/10
- 4 7/12 (Correct answer)
- 4 5/6
- 3 13/24
Correct answer: 4 7/12
Convert to improper fractions or find LCD 12: 2 10/12 + 1 9/12 = 3 19/12 = 4 7/12.
Question 4: If 30% of a number is 45, what is the number?
- 13.5
- 75
- 135
- 150 (Correct answer)
Correct answer: 150
0.30 × n = 45; dividing both sides by 0.30 gives n = 150.
Question 5: What is the product of −7 and −9?
- −63
- −16
- 16
- 63 (Correct answer)
Correct answer: 63
A negative times a negative is positive: (−7)(−9) = 63.
Question 6: Evaluate: 48 ÷ 6 + 3 × 4 − 2
- 10
- 16
- 18
- 20 (Correct answer)
Correct answer: 20
Order of operations: 8 + 12 − 2 = 20; division and multiplication first, then addition and subtraction.
Question 7: A car depreciates by 20% each year. If it costs $25,000 new, what is it worth after 1 year?
- $5,000
- $20,000 (Correct answer)
- $21,000
- $22,500
Correct answer: $20,000
20% of $25,000 = $5,000; $25,000 − $5,000 = $20,000.
Wide Range Achievement Test Wide Range Achievement Math Computation Subtest 4
What is the least common multiple (LCM) of 12 and 18?