Numeracy Mixed Practice: Exam-Style Set for the NMC CBT

The fourteen chapters before this one taught Part A one tool at a time. The real paper doesn’t work that way. Fifteen questions arrive in random order with no labels, and the first skill each one tests is recognition: which calculation is this?

The stem always tells you, if you know where to look. Units are the giveaway:

• Two different mass units in one stem: a conversion is hiding, do it first.
• A strength “per 5 mL”: oral liquid, want over have times what it’s in.
• mg/kg: weight-based, multiply by the kilograms, then check for /day.
• drops/mL and “gravity”: drip rate. A pump and hours: mL per hour.
• A list of ins and outs: fluid balance, total everything, mind the sign.
• A percentage or ratio: grams per 100 mL, convert to mg/mL and proceed.

Name the type out loud (in your head) before touching the calculator. Misidentifying the question costs more than any arithmetic slip, because it sends the whole ninety seconds down the wrong road.

Pacing the real paper

Part A shares one sitting with the 105+ clinical questions. The 4 hours give you room for 60 to 75 minutes on the numeracy if you need it, but needing it is the warning sign; train until the fifteen take about 30 minutes. Under a minute for conversions and single-formula questions, up to two and a half for chained ones. The one-step marks fund the multi-step thinking time. If a question is fighting you at the two-minute mark, flag it, answer your best guess, move on, return at the end. An unanswered question is the only unrecoverable one.

Both parts of the exam are scored separately; the pass mark is standard-set rather than a fixed percentage, and Part A is unforgiving of streaky performance because fifteen questions leave little room. In practice sets, 13 out of 15, consistently, is the level that makes exam day boring. Boring is the goal.

Using this set

The five questions below are deliberately unlabelled and cover five different types. Sit them in one go, against a clock if you can, before reading any explanations. Your result sorts the next move: a clean sweep means Part A is ready and Part B’s clinical chapters are next; anything missed points straight back at its topic chapter, from conversions through multi-step problems.

For the exam’s structure, booking and what test day looks like, the main guide’s CBT structure chapter has it covered. Timer on.