HESI A2 section
Math
Arithmetic for health care: fractions, decimals, ratios, percents, household and metric conversions, Roman numerals, military time, and dose problems solved by proportion — with an on-screen calculator.
- 55 questions (50 scored)
- 50 minutes
- 15 topics
- Calculator allowed
Number foundations
- Whole Numbers, Place Value & Order of OperationsPlace value, the four operations with whole numbers, order of operations (incl. simple exponents and square roots), number properties, and sign rules for negatives.
- Fractions & Mixed NumbersWhat a fraction means, equivalent and simplest form, comparing and ordering, and converting mixed numbers to improper fractions and back.
- Operations with FractionsAdding and subtracting with like and unlike denominators (finding the LCD), multiplying, dividing by the reciprocal, and working with mixed numbers.
- Decimals & RoundingDecimal place value, rounding to the place a question asks for (owns all rounding, whole numbers too), comparing decimals, and the four operations with decimals.
- Converting Fractions, Decimals & PercentsMoving between the three forms of the same number, the benchmark equivalents worth memorizing, and ordering mixed forms.
Ratios, proportions & percents
- Ratios, Proportions & Unit RatesRatios, unit rates and speed (owns every rate item), and setting up and solving a proportion — the method behind dose problems (tablets, mL, mg/kg).
- Percentages & Percent ProblemsPercent of a number, finding the whole or the percent, percent change, multi-step percent problems and percent-strength solutions (plain conversions: Converting).
Algebra, averages & word problems
- Mean, Median, Mode & RangeFinding the average (mean), the middle value (median), the most frequent value (mode) and the range of a small data set.
- Basic Algebra: Expressions & Solving for xVariables and terms, evaluating an expression, and solving one- and two-step equations with one unknown.
- Everyday Word ProblemsMulti-step everyday problems no method topic owns (money, non-percent mixtures, combined steps): translating words into math and checking the answer is reasonable.
Measurement, time & conversions
- Household ↔ Metric ConversionsHousehold units (tsp, tbsp, oz, cup, pint, quart, lb, inch) and their metric equivalents, converted with a proportion — incl. intake-and-output totals.
- Metric Units & ConversionsMetric base units and prefixes (kilo- to micro-), and converting within the metric system by moving the decimal point.
- Temperature: Fahrenheit ↔ CelsiusThe two formulas, the landmark temperatures (freezing, body, boiling), and converting either way.
- Military (24-Hour) TimeConverting between 12-hour and 24-hour time, midnight and noon, and finding elapsed time across the clock.
- Roman NumeralsThe seven symbols, adding and subtracting rules, and converting Roman numerals to Arabic numbers and back.
Study Math topic by topic, then take the timed section test.
HESI and HESI A2 are registered trademarks of Elsevier. NurseSavvy is not affiliated with or endorsed by Elsevier.