HESI A2-style practice: math, English, A&P, biology and chemistry: cram pack

Formula sheets, the key method steps for every topic and 18 practice problems, with full solutions at the back.

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1Formulas and methods

Pre-nursing math (entrance exam)

Order of operations
parentheses → exponents → × ÷ (left to right) → + − (left to right)
Fractions
a/b + c/d = (ad + bc)/bd, a/b × c/d = ac/bd, a/b ÷ c/d = a/b × d/c
Percent
p% of N = (p/100)·N; percent = part/whole × 100
Percent change
(new − original)/original × 100
Discount, then tax
price × (1 − d/100) × (1 + t/100)
Proportion
a/b = c/d → ad = bc
Mean, median, mode, range
sum/count; middle of ordered list; most frequent; max − min
Length, capacity, time
1 km = 1000 m, 1 m = 100 cm, 1 ft = 12 in, 1 yd = 3 ft, 1 mi = 5280 ft, 1 gal = 4 qt = 16 cups, 1 h = 60 min
Temperature
°F = °C·9/5 + 32, °C = (°F − 32)·5/9; a change of 1 °C = 1.8 °F
Area
rectangle l·w, triangle ½·b·h, circle π·r²
Perimeter and circumference
rectangle 2l + 2w, circle π·d = 2π·r
Volume
box l·w·h, cylinder π·r²·h; 1000 cm³ = 1 L
Speed
distance ÷ time (time in hours for mph or km/h)

Method

  1. Read the last sentence first: what exactly is asked, and in which unit or form (lowest terms, nearest cent, one decimal place)?
  2. Write the numbers in one form: turn mixed numbers into improper fractions, percents into decimals, and hours and minutes into one unit.
  3. Pick the method: PEMDAS for expressions, a common denominator for adding fractions, part ÷ whole × 100 for percents, cross-multiplying for proportions, inverse operations for equations.
  4. Work one step at a time and write each line down; round only at the very end.
  5. Check the size of the answer with an estimate, and put an equation’s answer back in.

Nursing math & unit conversions

Metric steps
1 kg = 1000 g, 1 g = 1000 mg, 1 mg = 1000 mcg, 1 L = 1000 mL
Weight and length
1 kg = 2.2 lb, 1 lb = 16 oz, 1 in = 2.54 cm, 1 ft = 12 in
Household measures
1 tsp = 5 mL, 1 tbsp = 15 mL, 1 fl oz = 30 mL, 1 cup = 8 fl oz = 240 mL
Temperature
°C = (°F − 32)·5/9, °F = °C·9/5 + 32
24-hour clock
PM hours 1–11: add 12; 12 AM = 00:xx; 12 PM = 12:xx
Dose rate
mcg/min × 60/1000 = mg/h
Laboratory factors
glucose 1 mmol/L = 18 mg/dL; creatinine 1 mg/dL = 88.4 µmol/L; Hb 1 g/dL = 10 g/L

Method

  1. Write the given quantity with its unit and the unit you want.
  2. Pick the equivalent: 1000 between kg, g, mg and mcg or L and mL; 1 kg = 2.2 lb; 1 tsp = 5 mL, 1 tbsp = 15 mL, 1 fl oz = 30 mL, 1 cup = 240 mL.
  3. Write it as a fraction so that the unwanted unit cancels; for a rate, use one fraction per unit that changes.
  4. Check the direction: a smaller unit gives a bigger number.
  5. Round only the final answer, to the precision the question names.

Reading comprehension (entrance exams)

Method

  1. Read the question first so you know what you are looking for.
  2. Skim the passage for its topic and main point; the first or last sentence often states it.
  3. Go back to the exact lines that answer the question.
  4. For inferences, choose the option the clues most strongly support, not one that goes further.
  5. For labels and tables, apply every rule that fits the case and do the small calculation carefully.

Healthcare vocabulary (entrance exams)

Method

  1. Read the whole sentence and look for a context clue: a definition, a contrast, an example or a cause and effect.
  2. Split an unfamiliar word into prefix, root and suffix and translate each part.
  3. Read a medical term from the suffix back to the start (hepat-itis: inflammation of the liver).
  4. Put each option into the sentence and check that the meaning still fits.
  5. Choose the meaning used in this sentence, even if the word has another everyday meaning.

English grammar & language usage (entrance exams)

Method

  1. Find the subject and the verb of the sentence before choosing a form.
  2. Strip away phrases (of the …, along with …) and extra people (you and …) to test agreement and pronoun case.
  3. Check each clause: can it stand alone? Join independent clauses with a comma + conjunction or a semicolon.
  4. Check modifiers and lists: the describing phrase next to its word, items in the same form.
  5. For word choice and register, pick the precise, formal and concise option.

Biology for nursing entrance exams

Method

  1. Name the topic of the question: cell parts, transport, division, DNA and protein synthesis, inheritance, biomolecules, microorganisms or experimental design.
  2. Recall the key rule: A–T and G–C, diffusion from high to low, water moves towards more solute, mitosis keeps and meiosis halves the chromosome number.
  3. For crosses, write the parents’ genotypes, list the gametes and fill a Punnett square before counting.
  4. For experiments, label the independent, dependent and controlled variables, and ask whether the evidence supports or only suggests the conclusion.
  5. Check each option against the question asked, not just whether it is a true statement.

Chemistry for nursing entrance exams

Method

  1. Identify what is given and asked: particles, a formula, a state change, a concentration, a pH or a mass.
  2. Use the periodic table: the atomic number gives protons, the group gives valence electrons and the usual ion charge.
  3. Balance equations with coefficients only, element by element, oxygen and hydrogen last.
  4. For amounts, go mass → moles → mole ratio → moles → mass, and for solutions use M = mol/L and C₁V₁ = C₂V₂.
  5. Remember that pH is logarithmic: one unit is a factor of 10.

2Practice problems

1.Pre-nursing math (entrance exam)Medium

A town had 80 registered nurses last year and has 92 this year. What is the percent increase p?

80 → 92
p = %
2.Pre-nursing math (entrance exam)Hard

Use the order of operations to find the value of x: x = (−4)² − 4 × (−6) ÷ 2.

x = (−4)² − 4 × (−6) ÷ 2
x =
3.Nursing math & unit conversionsMedium
94969810010210410635363738394041°F°C100.4 °F? °C

Practice exercise (made-up values, not clinical guidance). A patient’s temperature is 100.4 °F. Convert it to degrees Celsius T with °C = (°F − 32) × 5/9. Round to one decimal place.

100.4 °F
T = °C
4.Nursing math & unit conversionsHard
1 tbsp · 4/day · 5 d? mL1 tbsp = 15 mL

Practice exercise (made-up values, not clinical guidance). A prescription reads 1 tbsp of an oral suspension four times a day for 5 days. Using 1 tbsp = 15 mL, how many mL V are needed for the whole course?

1 tbspfour times a day5 days1 tbsp = 15 mL
V = mL
5.Reading comprehension (entrance exams)Medium

“When the fire alarm sounded, the teacher calmly led the children down the stairs, counted them at the meeting point and reported that everyone was safe.” Which word best describes the teacher’s actions?

  1. APanicked
  2. BOrganised
  3. CCareless
  4. DConfused and lost
6.Reading comprehension (entrance exams)Hard

The author writes: “Since the hospital started a quiet hour from 2 to 3 p.m., patients report sleeping better. However, the survey asked only patients on one ward, during one week.” What does the second sentence do?

  1. AIt proves it works on every ward.
  2. BIt explains why the quiet hour started.
  3. CIt limits how far the result can be applied.
  4. DIt shows patients slept worse.
7.Healthcare vocabulary (entrance exams)Medium

Choose the meaning of the word in bold: “The patient showed impaired hearing in one ear.”

  1. ACompletely normal
  2. BWeakened or damaged
  3. CRecently improved
  4. DUnusually sharp
8.Healthcare vocabulary (entrance exams)Hard

Which word means “absence of menstrual periods”?

  1. AMenorrhagia
  2. BAmenorrhoea
  3. CMetrorrhagia
  4. DDysmenorrhoea
9.English grammar & language usage (entrance exams)Medium

Choose the correct word: “The scarf ___ her coat perfectly.”

  1. Acompliments
  2. Bcomplement
  3. Ccomplements
  4. Dcompliment
10.English grammar & language usage (entrance exams)Hard

Which sentence contains a squinting (ambiguous) modifier?

  1. AStudents who study often get good grades.
  2. BStudents get good grades by studying often.
  3. CStudents often get good grades when they study.
  4. DStudents who often study get good grades.
11.Human anatomyMedium

Which cranial nerve controls most of the muscles of facial expression?

  1. AHypoglossal nerve (XII)
  2. BOculomotor nerve (III)
  3. CFacial nerve (VII)
  4. DTrigeminal nerve (V)
12.Human anatomyHard

In portal hypertension, oesophageal varices form at which portosystemic anastomosis?

  1. ABetween the paraumbilical veins and the epigastric veins
  2. BBetween the superior rectal and middle rectal veins
  3. CBetween the splenic vein and the left renal vein
  4. DBetween the left gastric vein and the oesophageal tributaries of the azygos vein
13.Human physiologyMedium

Low plasma albumin, as in severe liver disease, causes oedema mainly because:

  1. APlasma oncotic pressure falls
  2. BThe capillaries become impermeable
  3. CCapillary hydrostatic pressure falls
  4. DLymphatic drainage increases
14.Human physiologyHard

In long-standing aortic stenosis, how does the left ventricle adapt?

  1. ANo change because the valve is not part of the ventricle
  2. BThinning of the wall with dilation
  3. CAtrophy of the muscle due to less work
  4. DConcentric hypertrophy with a thicker wall
15.Biology for nursing entrance examsMedium

What is a codon?

  1. AThe part of a chromosome where the spindle fibres attach during mitosis
  2. BA group of three mRNA bases that codes for one amino acid
  3. CA protein that starts transcription
  4. DA single base that codes for a protein
16.Biology for nursing entrance examsHard

In a drug trial, one group receives a sugar pill that looks like the real drug. Why?

  1. ATo increase the dose of the real drug
  2. BTo control for the placebo effect, the improvement caused by expecting treatment
  3. CTo make sure every patient is cured
  4. DTo save money on the real drug
17.Chemistry for nursing entrance examsMedium

For the gas reaction N₂ + 3H₂ ⇌ 2NH₃, what is the effect of increasing the pressure?

  1. AThe equilibrium shifts to the left, toward N₂ and H₂
  2. BThe equilibrium shifts to the right, toward NH₃
  3. CThere is no effect on the equilibrium
  4. DThe NH₃ breaks down completely
18.Chemistry for nursing entrance examsHard

Which statement correctly distinguishes a scientific law from a scientific theory?

  1. AA law is only a guess, while a theory is a proven fact
  2. BA theory becomes a law once it is proved
  3. CA law describes what happens; a theory explains why it happens
  4. DLaws apply only to chemistry, theories only to biology

3Solutions

1.Pre-nursing math (entrance exam)

Answer: p = 15 %

Percent means per hundred: p% of a number is (p/100) × the number. To find what percent A is of B, divide A by B and multiply by 100. A percent change compares the change with the original value: percent change = (new − original)/original × 100.

Change

92 − 80 = 12

Compare with the original

p = 12/80 × 100 = 15%

Answer

p = 15%
2.Pre-nursing math (entrance exam)

Answer: x = 28

Order of operations (PEMDAS/BODMAS): work inside parentheses first, then exponents (powers), then multiplication and division from left to right, and last addition and subtraction from left to right. Multiplication does not come before division, and addition does not come before subtraction: each pair is done in the order it appears. A negative number in parentheses keeps its sign when squared: (−3)² = 9, but −3² = −9.

One operation at a time

(−4)² is positive: a negative times a negative is positive.

x = (−4)² − 4 × (−6) ÷ 2
= 16 − 4 × (−6) ÷ 2
= 16 − (−24) ÷ 2
= 16 − (−12)

Result

x = 28

Answer

x = 28
3.Nursing math & unit conversions

Answer: T = 38 °C

Temperature: °C = (°F − 32) × 5/9 and °F = °C × 9/5 + 32. Subtract 32 before you multiply when going from °F, and add 32 after you multiply when going from °C. A quick check: 37 °C is 98.6 °F, and every 1 °C is 1.8 °F.

Subtract 32

100.4 − 32 = 68.4

Multiply by 5/9

T = 68.4·5/9 = 38 °C

Answer

T = 38 °C
4.Nursing math & unit conversions

Answer: V = 300 mL

Dimensional analysis: write the given quantity, then multiply by conversion factors written as fractions (for example 60 min/1 h or 1 mg/1000 mcg) so that each unwanted unit appears once on top and once underneath and cancels. When only the wanted unit is left, calculate. Use the equivalents the question gives and round only the final answer.

Volume per dose

1 tbsp = 1·15 = 15 mL

Whole course

V = 15 mL × 4/day × 5 = 300 mL

Answer

V = 300 mL
5.Reading comprehension (entrance exams)

Answer: B · Organised

Why this is the answer

Calmly leading the class, counting the children and reporting shows the teacher acted in an organised way.

Answer

B · Organised
6.Reading comprehension (entrance exams)

Answer: C · It limits how far the result can be applied.

Why this is the answer

The second sentence notes that the evidence comes from one ward over one week, so the result may not apply generally.

Answer

C · It limits how far the result can be applied.
7.Healthcare vocabulary (entrance exams)

Answer: B · Weakened or damaged

Why this is the answer

Impaired means reduced in strength, quality or function.

Answer

B · Weakened or damaged
8.Healthcare vocabulary (entrance exams)

Answer: B · Amenorrhoea

Why this is the answer

Amenorrhoea (US: amenorrhea) is absence of menstruation; dysmenorrhoea is painful periods, menorrhagia is heavy bleeding and metrorrhagia is bleeding between periods.

Answer

B · Amenorrhoea
9.English grammar & language usage (entrance exams)

Answer: C · complements

Why this is the answer

“Complements” means goes well with or completes. “Compliments” means praises. The singular subject needs the -s form.

Answer

C · complements
10.English grammar & language usage (entrance exams)

Answer: A · Students who study often get good grades.

Why this is the answer

In A, “often” could modify “study” or “get”, so the meaning is unclear. Moving the modifier, as in C, removes the ambiguity.

Answer

A · Students who study often get good grades.
11.Human anatomy

Answer: C · Facial nerve (VII)

Why this is the answer

The facial nerve (cranial nerve VII) supplies the muscles of facial expression. Damage causes facial palsy, as in Bell's palsy.

Answer

C · Facial nerve (VII)
12.Human anatomy

Answer: D · Between the left gastric vein and the oesophageal tributaries of the azygos vein

Why this is the answer

At the lower oesophagus, portal blood in the left gastric vein meets systemic blood in the oesophageal veins draining to the azygos system. High portal pressure dilates these veins.

Answer

D · Between the left gastric vein and the oesophageal tributaries of the azygos vein
13.Human physiology

Answer: A · Plasma oncotic pressure falls

Why this is the answer

Albumin generates most of the plasma oncotic pressure that pulls fluid back into capillaries. When it falls, more fluid stays in the tissues.

Answer

A · Plasma oncotic pressure falls
14.Human physiology

Answer: D · Concentric hypertrophy with a thicker wall

Why this is the answer

Pressure overload makes the ventricular wall thicken (concentric hypertrophy) to keep wall stress normal. Volume overload, as in regurgitation, causes dilation instead.

Answer

D · Concentric hypertrophy with a thicker wall
15.Biology for nursing entrance exams

Answer: B · A group of three mRNA bases that codes for one amino acid

Why this is the answer

Each codon of three bases specifies one amino acid or a stop signal. The spindle attachment point is the centromere.

Answer

B · A group of three mRNA bases that codes for one amino acid
16.Biology for nursing entrance exams

Answer: B · To control for the placebo effect, the improvement caused by expecting treatment

Why this is the answer

A placebo group shows how much change happens without the active drug, so the true effect of the drug can be measured.

Answer

B · To control for the placebo effect, the improvement caused by expecting treatment
17.Chemistry for nursing entrance exams

Answer: B · The equilibrium shifts to the right, toward NH₃

Why this is the answer

The left side has 4 mol of gas and the right side 2 mol. Higher pressure favours the side with fewer gas molecules, so more NH₃ forms.

Answer

B · The equilibrium shifts to the right, toward NH₃
18.Chemistry for nursing entrance exams

Answer: C · A law describes what happens; a theory explains why it happens

Why this is the answer

A law summarises a consistent pattern, often as a rule or equation (mass is conserved). A theory is a well-tested explanation of why (atoms are rearranged, not created). Theories do not turn into laws.

Answer

C · A law describes what happens; a theory explains why it happens

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