WGU D771 Quantitative Literacy | OA |
Objective Assessment | Questions and Answers
|Latest 2026/27 Update | 100% Correct.
1. Convert 0.0000456 to scientific notation.
A) 4.56 × 10⁻ ⁵
B) 45.6 × 10⁻ ⁶
C) 4.56 × 10⁵
D) 4.56 × 10⁻ ⁴
Answer: A) 4.56 × 10⁻ ⁵
Rationale: Move the decimal 5 places to the right → 4.56.
Exponent is negative because the original number is less
than 1.
2. Evaluate: 3² × 2³ ÷ 6
A) 12
B) 8
C) 6
D) 24
1
,Answer: A) 12
Rationale: 3² = 9, 2³ = 8, 9 × 8 = 72, 72 ÷ 6 = 12.
Order of operations: exponents first, then left to right.
3. A recipe calls for 2/3 cup of sugar. You want to make
half the recipe. How much sugar do you need?
A) 1/3 cup
B) 2/6 cup
C) 1/2 cup
D) 4/3 cup
Answer: A) 1/3 cup
Rationale: (2/3) × (1/2) = 2/6 = 1/3.
4. Which number is largest? 0.45, 0.405, 0.5, 0.455
A) 0.5
B) 0.455
C) 0.45
D) 0.405
2
,Answer: A) 0.5
Rationale: 0.5 = 0.500. Compare digit by digit: 0.500 >
0.455 > 0.450 > 0.405.
5. A shirt originally $80 is 25% off. What is the sale
price?
A) $60
B) $55
C) $20
D) $65
Answer: A) $60
Rationale: 25% of 80 = 20; 80 − 20 = 60.
6. 15 is what percent of 60?
A) 25%
B) 20%
C) 30%
D) 40%
Answer: A) 25%
Rationale: 15/60 = 0.25 = 25%.
3
, 7. Round 7.6849 to 2 decimal places.
A) 7.68
B) 7.69
C) 7.70
D) 7.68
Answer: A) 7.68
Rationale: The thousandths digit is 4 (less than 5), so
round down. The hundredths digit (8) stays the same.
8. Simplify: 5/8 + 1/4
A) 7/8
B) 6/8
C) 3/4
D) 5/6
Answer: A) 7/8
Rationale: 1/4 = 2/8; 5/8 + 2/8 = 7/8.
9. What is the absolute value of |− 12 + 5|?
A) 7
B) − 7
4
Objective Assessment | Questions and Answers
|Latest 2026/27 Update | 100% Correct.
1. Convert 0.0000456 to scientific notation.
A) 4.56 × 10⁻ ⁵
B) 45.6 × 10⁻ ⁶
C) 4.56 × 10⁵
D) 4.56 × 10⁻ ⁴
Answer: A) 4.56 × 10⁻ ⁵
Rationale: Move the decimal 5 places to the right → 4.56.
Exponent is negative because the original number is less
than 1.
2. Evaluate: 3² × 2³ ÷ 6
A) 12
B) 8
C) 6
D) 24
1
,Answer: A) 12
Rationale: 3² = 9, 2³ = 8, 9 × 8 = 72, 72 ÷ 6 = 12.
Order of operations: exponents first, then left to right.
3. A recipe calls for 2/3 cup of sugar. You want to make
half the recipe. How much sugar do you need?
A) 1/3 cup
B) 2/6 cup
C) 1/2 cup
D) 4/3 cup
Answer: A) 1/3 cup
Rationale: (2/3) × (1/2) = 2/6 = 1/3.
4. Which number is largest? 0.45, 0.405, 0.5, 0.455
A) 0.5
B) 0.455
C) 0.45
D) 0.405
2
,Answer: A) 0.5
Rationale: 0.5 = 0.500. Compare digit by digit: 0.500 >
0.455 > 0.450 > 0.405.
5. A shirt originally $80 is 25% off. What is the sale
price?
A) $60
B) $55
C) $20
D) $65
Answer: A) $60
Rationale: 25% of 80 = 20; 80 − 20 = 60.
6. 15 is what percent of 60?
A) 25%
B) 20%
C) 30%
D) 40%
Answer: A) 25%
Rationale: 15/60 = 0.25 = 25%.
3
, 7. Round 7.6849 to 2 decimal places.
A) 7.68
B) 7.69
C) 7.70
D) 7.68
Answer: A) 7.68
Rationale: The thousandths digit is 4 (less than 5), so
round down. The hundredths digit (8) stays the same.
8. Simplify: 5/8 + 1/4
A) 7/8
B) 6/8
C) 3/4
D) 5/6
Answer: A) 7/8
Rationale: 1/4 = 2/8; 5/8 + 2/8 = 7/8.
9. What is the absolute value of |− 12 + 5|?
A) 7
B) − 7
4
