HESI A2 BASIC MATH SKILLS EXAM
QUESTIONS AND VERIFIED
ANSWERS WITH RATIONALES
GRADED A+ LATEST
Section 1: Whole Numbers, Fractions, Decimals, and Percentages
1. What is 2,548 rounded to the nearest hundred?
A. 2,500
B. 2,540
C. 2,550
D. 2,600
Answer: D. 2,600
Rationale: 2,548 is closer to 2,600 than 2,500 when rounding to the nearest
hundred.
2. Convert the fraction 7/8 to a decimal.
A. 0.72
B. 0.875
C. 0.78
D. 0.87
Answer: B. 0.875
Rationale: 7 ÷ 8 = 0.875
3. A patient’s medication dose is 0.25 mg. How many micrograms (mcg) is this?
A. 25 mcg
B. 250 mcg
C. 2,500 mcg
D. 25,000 mcg
,Answer: C. 250 mcg
Rationale: 1 mg = 1,000 mcg → 0.25 mg × 1,000 = 250 mcg
4. What is 15% of 240?
A. 24
B. 30
C. 36
D. 40
Answer: C. 36
Rationale: 240 × 0.15 = 36
5. Add: 4 2/5 + 3 3/4
A. 7 1/20
B. 8 1/20
C. 7 11/20
D. 8 11/20
Answer: D. 8 11/20
Rationale: Convert to improper fractions: 22/5 + 15/4 → LCM = 20 → 88/20 +
75/20 = 163/20 = 8 3/20? Wait, recalc.
Step:
4 2/5 = 22/5 → 88/20
3 3/4 = 15/4 → 75/20
Sum = 88 + 75 = 163/20 = 8 3/20
Correct Answer: 8 3/20 → Option not listed. So need correct options.
Let’s fix options:
A. 7 19/20
B. 8 3/20
C. 7 11/20
D. 8 11/20
Answer: B. 8 3/20
,6. Subtract: 12.75 – 8.6
A. 4.05
B. 4.15
C. 4.25
D. 4.35
Answer: B. 4.15
Rationale: 12.75 – 8.6 = 12.75 – 8.60 = 4.15
7. Convert 0.625 to a fraction in simplest form.
A. 5/8
B. 3/5
C. 7/8
D. 1/2
Answer: A. 5/8
Rationale: 0.625 = 625/1000 → divide numerator and denominator by 125 → 5/8
8. A test score of 42 out of 50 is what percentage?
A. 82%
B. 84%
C. 86%
D. 88%
Answer: B. 84%
Rationale: (42 ÷ 50) × 100 = 84%
9. Multiply: 0.8 × 0.25
A. 0.2
B. 0.25
C. 0.3
D. 0.32
, Answer: A. 0.2
Rationale: 0.8 × 0.25 = 0.2
10. Divide: 7.2 ÷ 0.6
A. 11
B. 12
C. 13
D. 14
Answer: B. 12
Rationale: 7.2 ÷ 0.6 = 72 ÷ 6 = 12
Section 2: Ratio, Proportion, and Conversions
11. If 3 tablets contain 150 mg of medication, how many mg are in 7 tablets?
A. 250 mg
B. 350 mg
C. 300 mg
D. 400 mg
Answer: B. 350 mg
Rationale: 150 ÷ 3 = 50 mg per tablet → 50 × 7 = 350 mg
12. A prescription reads: “Amoxicillin 500 mg orally every 8 hours.” How many
mg will the patient receive in 24 hours?
A. 1,000 mg
B. 1,500 mg
C. 2,000 mg
D. 2,500 mg
Answer: B. 1,500 mg
Rationale: 500 mg × 3 doses/day = 1,500 mg
QUESTIONS AND VERIFIED
ANSWERS WITH RATIONALES
GRADED A+ LATEST
Section 1: Whole Numbers, Fractions, Decimals, and Percentages
1. What is 2,548 rounded to the nearest hundred?
A. 2,500
B. 2,540
C. 2,550
D. 2,600
Answer: D. 2,600
Rationale: 2,548 is closer to 2,600 than 2,500 when rounding to the nearest
hundred.
2. Convert the fraction 7/8 to a decimal.
A. 0.72
B. 0.875
C. 0.78
D. 0.87
Answer: B. 0.875
Rationale: 7 ÷ 8 = 0.875
3. A patient’s medication dose is 0.25 mg. How many micrograms (mcg) is this?
A. 25 mcg
B. 250 mcg
C. 2,500 mcg
D. 25,000 mcg
,Answer: C. 250 mcg
Rationale: 1 mg = 1,000 mcg → 0.25 mg × 1,000 = 250 mcg
4. What is 15% of 240?
A. 24
B. 30
C. 36
D. 40
Answer: C. 36
Rationale: 240 × 0.15 = 36
5. Add: 4 2/5 + 3 3/4
A. 7 1/20
B. 8 1/20
C. 7 11/20
D. 8 11/20
Answer: D. 8 11/20
Rationale: Convert to improper fractions: 22/5 + 15/4 → LCM = 20 → 88/20 +
75/20 = 163/20 = 8 3/20? Wait, recalc.
Step:
4 2/5 = 22/5 → 88/20
3 3/4 = 15/4 → 75/20
Sum = 88 + 75 = 163/20 = 8 3/20
Correct Answer: 8 3/20 → Option not listed. So need correct options.
Let’s fix options:
A. 7 19/20
B. 8 3/20
C. 7 11/20
D. 8 11/20
Answer: B. 8 3/20
,6. Subtract: 12.75 – 8.6
A. 4.05
B. 4.15
C. 4.25
D. 4.35
Answer: B. 4.15
Rationale: 12.75 – 8.6 = 12.75 – 8.60 = 4.15
7. Convert 0.625 to a fraction in simplest form.
A. 5/8
B. 3/5
C. 7/8
D. 1/2
Answer: A. 5/8
Rationale: 0.625 = 625/1000 → divide numerator and denominator by 125 → 5/8
8. A test score of 42 out of 50 is what percentage?
A. 82%
B. 84%
C. 86%
D. 88%
Answer: B. 84%
Rationale: (42 ÷ 50) × 100 = 84%
9. Multiply: 0.8 × 0.25
A. 0.2
B. 0.25
C. 0.3
D. 0.32
, Answer: A. 0.2
Rationale: 0.8 × 0.25 = 0.2
10. Divide: 7.2 ÷ 0.6
A. 11
B. 12
C. 13
D. 14
Answer: B. 12
Rationale: 7.2 ÷ 0.6 = 72 ÷ 6 = 12
Section 2: Ratio, Proportion, and Conversions
11. If 3 tablets contain 150 mg of medication, how many mg are in 7 tablets?
A. 250 mg
B. 350 mg
C. 300 mg
D. 400 mg
Answer: B. 350 mg
Rationale: 150 ÷ 3 = 50 mg per tablet → 50 × 7 = 350 mg
12. A prescription reads: “Amoxicillin 500 mg orally every 8 hours.” How many
mg will the patient receive in 24 hours?
A. 1,000 mg
B. 1,500 mg
C. 2,000 mg
D. 2,500 mg
Answer: B. 1,500 mg
Rationale: 500 mg × 3 doses/day = 1,500 mg
