September 8, 2026 · 8 min read
TL;DR: We ran a count over all 1,948 single-answer questions in this bank looking for stems that supply two or more numbers alongside a formula term. There are 24. Thirteen are earned value, two are expected monetary value, one is three-point estimating, one is a critical path network. The formula sheet most candidates build is real preparation for about 1.2% of the exam.
Ask a PMP candidate what worries them and a surprising number will say the maths. Forums fill up with EVM cheat sheets. People memorise the two EAC variants because they are not sure which one shows up.
So we counted.
The test we ran: does the stem contain two or more numbers, and does the question or its answer involve a formula term (CPI, SPI, EV, PV, AC, BAC, EAC, ETC, VAC, TCPI, EMV, PERT, float, slack, expected monetary value, standard deviation, communication channels)? Two numbers, because you cannot compute anything from one.
| What we looked for | Count | Share of 1,948 |
|---|---|---|
| Stems containing any digit at all | 151 | 7.8% |
| Stems with 2+ numbers and a formula term | 24 | 1.2% |
| Of those, earned value (CPI/SPI/EV/PV/AC) | 13 | 0.7% |
| Of those, expected monetary value | 2 | 0.1% |
| Of those, critical path arithmetic | 1 | 0.05% |
| Of those, three-point estimating | 1 | 0.05% |
Twenty-four questions. A candidate could get every one of them wrong and still pass comfortably.
The 151-versus-24 gap is where the fear comes from. Numbers turn up in stems all the time. A twelve-month project. A team of eight. A two-week sprint. Sixty percent of the budget spent. They look like the setup to a calculation and they are almost never that. They are scenery, and they are doing something more useful than arithmetic: setting a scale, so you know whether this is a small internal effort or a regulated programme, because the right first action differs.
A real calculation question in this bank supplies every number it needs and one it does not. Here is one, on a printing-press overhaul:
Budget at completion is $180,000. At the reporting date, earned value is $18,000 and actual cost is $24,000. The sponsor asks for the cost performance index. What is it?
A: -$6,000 B: 1.33 C: $0.75 D: 0.75
CPI = EV / AC = 18,000 / 24,000 = 0.75. Look at what the wrong answers are made of. Option A is the cost variance: right arithmetic, wrong formula. Option B is the division inverted. Option C is the correct number carrying a dollar sign, which is wrong on its face, because an index is a ratio and the units cancel. And the budget at completion, the largest and most prominent number in the stem, is not needed at all.
Three of the four wrong answers are reachable by a candidate who knows the formulas and slips. None is reachable by someone who does not know what an index is. That is the pattern across all 24. The arithmetic is trivial and the discrimination is conceptual.
Common trap: "I need to be fast at the calculations." Speed is not the constraint. Twenty-four questions across a four-hour exam leaves plenty of time. The real trap is grabbing every number the stem offers. In the press question, $180,000 pulls candidates toward an EAC formula nobody asked for. Across this bank we counted 151 stems containing a digit against 24 that need one computed, so roughly five out of six numbers you meet are context rather than input. This bank names which number was the decoy rather than just marking the option wrong.
Judgement in an incomplete scenario. The dominant question shape gives you four actions a competent project manager might genuinely take and asks which comes first. The discrimination is in ordering, and in what the scenario did or did not establish, not in anything you can compute.
Which is why the more common EVM question is not the one above. It is this one:
A post-mortem analysis carried out after the project's scheduled finish date shows a CPI of 0.8 and an SPI of 1.25. What does this tell you?
No arithmetic. The indices are handed to you finished. What is being tested is whether you can read them: the project came in ahead of schedule and over cost, which usually means it bought time with money. One sentence of interpretation, no division at all. Questions shaped like this outnumber the compute-it-yourself kind in the bank.
The practical consequence for a study plan is straightforward. Learn the formulas well enough to know what each index means when someone hands it to you, then stop. The hours earmarked for drilling EAC variants are better spent on situational questions, because that is where the other 1,924 live.
A short list, ranked by how often the concept appears in any form, not just as arithmetic:
Below that line, the EAC variants, TCPI, the PERT weighted average and standard deviation are worth a single pass and no memorisation drill. In this bank, three-point estimating appears with numbers to compute exactly once.
How much maths is actually on the PMP exam? Very little. In this bank of 1,948 single-answer questions, only 24 supply two or more numbers alongside a formula term such as CPI, SPI, EMV or float. That is 1.2 percent. Formula recall matters, but arithmetic speed is not where the exam is won.
Do I still need to learn the EVM formulas? Yes, but for interpretation more than computation. Far more questions hand you a finished CPI or SPI and ask what it means for the project than hand you raw numbers and ask you to divide. Knowing that CPI below 1.0 means over budget is worth more marks than being fast at the division.
Which formulas actually appear with numbers to compute? In this bank: earned value terms in 13 questions, expected monetary value in 2, three-point estimating in 1, and critical path arithmetic in 1. Communication channels and NPV appear as vocabulary but never with numbers to compute.
If the maths is small, what is the exam mostly testing? Judgement under an incomplete scenario. The overwhelming majority of questions give you four defensible actions and ask which comes first. That is a reading and sequencing skill, not an arithmetic one, and it is the skill worth the study hours.
PMP Practice's 2,141 questions are re-certified against PMBOK 8 and the July 2026 ECO, with every wrong answer explained, not just marked wrong, including which number in the stem was the decoy. Start the free 20-question sample - no card, no signup required to try it.
How much maths is actually on the PMP exam?
Very little. In this bank of 1,948 single-answer questions, only 24 supply two or more numbers alongside a formula term such as CPI, SPI, EMV or float. That is 1.2 percent. Formula recall matters, but arithmetic speed is not where the exam is won.
Do I still need to learn the EVM formulas?
Yes, but for interpretation more than computation. Far more questions hand you a finished CPI or SPI and ask what it means for the project than hand you raw numbers and ask you to divide. Knowing that CPI below 1.0 means over budget is worth more marks than being fast at the division.
Which formulas actually appear with numbers to compute?
In this bank: earned value terms in 13 questions, expected monetary value in 2, three-point estimating in 1, and critical path arithmetic in 1. Communication channels and NPV appear as vocabulary but never with numbers to compute.
If the maths is small, what is the exam mostly testing?
Judgement under an incomplete scenario. The overwhelming majority of questions give you four defensible actions and ask which comes first. That is a reading and sequencing skill, not an arithmetic one, and it is the skill worth the study hours.