SECTION 1: MATHEMATICS (55 Questions)
Topics: Basic Operations, Decimals, Fractions, Ratios, Percentages, Clock Time, Algebra, Descriptive
Statistics
1. [Basic Addition and Subtraction]
A patient’s medication dosage is increased by 15 mg in the morning and decreased by 8 mg in the
evening from a baseline of 40 mg. What is their total daily dosage?
A. 47 mg
B. 55 mg
C. 63 mg
D. 72 mg
Correct Answer: A
Rationale: 40 + 15 = 55; 55 − 8 = 47 mg.
HESI Topic: Basic Addition and Subtraction
2. [Changing Fractions to Decimals]
Convert 5/8 to a decimal.
A. 0.375
B. 0.58
C. 0.625
D. 0.825
Correct Answer: C
Rationale: 5 ÷ 8 = 0.625.
HESI Topic: Changing Fractions to Decimals
3. [Decimal Multiplication]
A tablet contains 0.25 g of active drug. How many grams are in 6 tablets?
A. 0.5 g
B. 1 g
C. 1.5 g
D. 2 g
Correct Answer: C
Rationale: 0.25 × 6 = 1.5 g.
HESI Topic: Decimal Multiplication
4. [Fraction Addition]
Add: 3/4 + 1/8
A. 1/2
B. 5/8
C. 7/8
D. 1
,Correct Answer: C
Rationale: LCD = 8; 6/8 + 1/8 = 7/8.
HESI Topic: Fraction Addition
5. [Percentage Calculation]
A hospital has 200 beds; 40 are occupied. What percent is occupied?
A. 20 %
B. 25 %
C. 40 %
D. 50 %
Correct Answer: A
Rationale: 40 ÷ 200 = 0.20 = 20 %.
HESI Topic: Percentages
6. [Ratio Simplification]
Simplify the ratio 18:24.
A. 2:3
B. 3:4
C. 4:5
D. 6:8
Correct Answer: B
Rationale: Divide by GCF 6 → 3:4.
HESI Topic: Ratios
7. [Clock Time Addition]
A shift starts at 06:45 and lasts 8 h 15 min. When does it end?
A. 14:45
B. 15:00
C. 15:15
D. 14:30
Correct Answer: B
Rationale: 06:45 + 8 h = 14:45 + 15 min = 15:00.
HESI Topic: Clock Time
8. [Algebra – Solving Linear Equations]
Solve: 3x − 7 = 14
A. x = 7
B. x = 5
C. x = 6
D. x = 9
Correct Answer: A
Rationale: 3x = 21 → x = 7.
HESI Topic: Algebra
,9. [Descriptive Statistics – Mean]
Find the mean: 12, 15, 18, 21, 24
A. 16
B. 17
C. 18
D. 19
Correct Answer: C
Rationale: Sum = 90; 90 ÷ 5 = 18.
HESI Topic: Descriptive Statistics
10. [Decimal Division]
Divide: 4.5 ÷ 0.5
A. 9
B. 8
C. 7
D. 6
Correct Answer: A
Rationale: 4.5 ÷ 0.5 = 9.
HESI Topic: Decimal Division
11. [Fraction Multiplication]
Multiply: 2/3 × 5/8
A. 5/12
B. 10/24
C. 5/8
D. 1/2
Correct Answer: A
Rationale: (2×5)/(3×8) = 10/24 = 5/12.
HESI Topic: Fraction Multiplication
12. [Percentage Decrease]
A drug dose is reduced from 80 mg to 60 mg. What is the percent decrease?
A. 20 %
B. 25 %
C. 30 %
D. 35 %
Correct Answer: B
Rationale: (80−60)/80 = 20/80 = 0.25 = 25 %.
HESI Topic: Percentages
13. [Ratio and Proportion]
If 2 tablets contain 40 mg, how many mg are in 5 tablets?
A. 80 mg
B. 100 mg
, C. 120 mg
D. 160 mg
Correct Answer: B
Rationale: 40 ÷ 2 = 20 mg/tab; 20 × 5 = 100 mg.
HESI Topic: Ratios
14. [Clock Time Subtraction]
A procedure ended at 14:20 after lasting 45 min. When did it start?
A. 13:25
B. 13:35
C. 13:45
D. 13:55
Correct Answer: B
Rationale: 14:20 − 45 min = 13:35.
HESI Topic: Clock Time
15. [Algebra – Substitution]
If a = 3 and b = −2, evaluate 2a − 3b
A. 0
B. 6
C. 12
D. 10
Correct Answer: C
Rationale: 2(3) − 3(−2) = 6 + 6 = 12.
HESI Topic: Algebra
16. [Descriptive Statistics – Median]
Find the median: 7, 9, 11, 13, 15
A. 9
B. 10
C. 11
D. 12
Correct Answer: C
Rationale: Middle value = 11.
HESI Topic: Descriptive Statistics
17. [Fraction Subtraction]
Subtract: 7/8 − 1/2
A. 5/8
B. 3/8
C. 1/4
D. 1/8