HESI A2 section

Basic Math Skills questions for the HESI A2

Whole numbers, fractions, ratios, and the dosage-style math nursing needs.

Practise this in a free mock Get taught this section

HESI A2 Math is built for nursing: whole numbers, fractions, decimals, percentages, ratios and proportions, with conversions, Roman numerals and military time — the arithmetic behind safe dosage calculation. Some answers are typed in rather than chosen, so a value has to be exactly right. A basic calculator is provided on most versions.

What math covers on the HESI A2

  • Whole numbers, decimals and number sense
  • Fractions and percentages
  • Ratios, proportions and basic algebra
  • Measurement, unit conversions, Roman numerals and military (24-hour) time
  • Word problems in healthcare and everyday settings
  • Typed numeric answers, as schools report on the real exam

Where candidates lose marks

Setting a proportion up the wrong way round — a clean calculation of the wrong ratio.

Fumbling Roman numerals and military time, which are easy marks once learned.

Rounding too early, so a typed answer ends up just outside the accepted value.

Losing or mismatching units in a conversion.

Test yourself on math

The free HESI A2 mock test draws from this section in the real-test mix — 40 exam-standard questions on a 38-minute clock, every answer explained and a section breakdown at the end. Your first mock is free, no sign-up.

Start a free mock test

Want it taught first? Start guided learning; your first topic is free.

The other HESI A2 sections

Anatomy and Physiology
Organisation, terminology and every body system — the section schools weight most.
Reading Comprehension
Whole health-related passages with a set of questions on each.
Vocabulary and General Knowledge
The health care and general vocabulary a nursing student is expected to know.
Grammar
Parts of speech, agreement, sentence structure and punctuation.
Read the complete HESI A2 guide

LearnTEAS is independent study material from Hamilton Technologies. It is not affiliated with or endorsed by ATI (Assessment Technologies Institute). ATI TEAS and TEAS are trademarks of their owner. Exam details can change, so check with ATI and your program for current requirements.