♟️ Strategy & Test-Day Playbook

Content knowledge gets you to about 160. The last five points come from strategy: pacing, smart guessing, using the calculator well, and knowing the traps ETS builds into every question type. This page is the tactics layer that sits on top of your modules.

🎯 The one idea behind every GRE Quant trick

The GRE rewards the right answer, not the elegant method. There is no credit for doing it "the math way." Plug in numbers, work backwards from the choices, estimate, and eliminate — whatever reaches the answer fastest and most reliably. Treat every problem as "what is the least work that gets me to a confident answer?"

1How the Quant section is built

The GRE (standard computer-delivered test) has two scored Quant sections, and the test is section-adaptive: how well you do on the first Quant section determines the difficulty of the second. Doing well early raises your scoring ceiling, so treat the first section as high-stakes.

Item	Detail
Sections	2 Quant sections
Questions per section	About 27 total across the two Quant sections on the current shorter GRE (~12–15 each)
Time per section	Roughly 21 minutes per Quant section on the current test
Pace	≈ 1 min 45 sec per question on average
Scoring	130–170, in 1-point steps
Calculator	Simple on-screen four-function calculator (+ − × ÷ √ and memory)
Navigation	You can skip, flag ("Mark"), and return to any question within the current section using "Review"

⚡ Use the section navigator

Because you can move freely inside a section, do an easy-first sweep: answer everything you can do quickly, Mark the hard ones, then spend leftover time on the flagged questions. Never let one hard problem eat five minutes on your first pass.

The exact count/timing shifts slightly between test versions; the pacing math (~1:45/question) is what matters. Confirm current numbers on the official ETS site before test day.

2The four question types

Four formats appear, mixed together. Knowing the mechanics of each removes avoidable mistakes.

Type	What it is	Watch out for
Quantitative Comparison (QC)	Compare Quantity A and Quantity B; pick A greater / B greater / equal / cannot be determined.	The four choices are always the same. "Cannot be determined" is a real, common answer.
Multiple choice — one answer	Five choices, pick one.	Distractors are the results of common mistakes — a wrong method often lands on a listed choice.
Multiple choice — one or more	Several choices; select every value that works.	No partial credit. Test each option independently.
Numeric entry	Type the number (or a fraction) into a box.	No choices to check against. Read the units and rounding instruction exactly.

3Quantitative Comparison — the highest-leverage type

QC is where careful students gain the most points, because the strategy is mechanical.

Memorize the four choices so you never re-read them: (A) A is greater, (B) B is greater, (C) equal, (D) cannot be determined.
You only need the relationship, not the values. Simplify both quantities the same way — add, subtract, divide by a positive — until the comparison is obvious.
Plug in strategically. Try numbers, get a relationship, then try to break it with a different kind of number. If two different legal inputs give two different relationships, the answer is (D).

⚡ The "0, 1, negative, fraction, big" checklist

When plugging into a QC with a variable, always test numbers from these families: 0, 1, a negative, a fraction between 0 and 1, and a large number. These are exactly the cases ETS uses to make a naïve "A is greater" become "cannot be determined."

⚠️ QC traps

If a quantity contains a variable with no restriction, (D) is very often correct. Don't assume the variable is a positive integer.
Never multiply or divide both sides by a variable unless you know its sign — dividing by a negative flips the comparison.
If both quantities are specific numbers with no variables, the answer cannot be (D) — a definite relationship always exists. Compute or estimate it.
Watch geometry figures: in QC they are not drawn to scale. Reason from the given facts, not the picture.

4Two universal shortcuts: Plug In & Backsolve

Plugging in numbers (for variables in the question)

When a problem is stated with variables and the answer choices are also in variables, replace the variables with easy numbers, compute the numeric answer, then see which choice produces it.

Pick small, distinct numbers that obey the constraints — avoid 0 and 1 (they make several choices coincide), and avoid numbers already in the problem.
For percent problems, 100 is almost always the smart starting value.
If more than one choice matches, pick a second set of numbers and re-test only the survivors.

Backsolving (for numeric choices)

When the choices are plain numbers and the algebra is messy, test the choices in the question instead of solving. Choices are listed in order, so start with the middle value (C) — if it's too big or too small, you eliminate half the choices at once.

⚡ When to use which

Variables in the answer choices → Plug In. Numbers in the answer choices + "find the value of x" → Backsolve. Between them, these two tactics crack a large share of medium/hard multiple-choice questions without any algebra.

5Pacing & the guess-vs-grind decision

There is no penalty for wrong answers, so never leave a question blank. Every question is worth the same — a hard one is worth exactly as much as an easy one, so don't overspend on any single problem.

Situation	Do this
You see the method instantly	Solve it. Aim for < 1 minute on easy questions to bank time.
~90 seconds in, no clear path	Eliminate what you can, make your best guess, Mark it, and move on.
2 minutes in, still stuck	Guess now. Time spent past 2 minutes is usually better used elsewhere.
~1 minute left in the section	Make sure every question has an answer selected — fill in remaining blanks with a guess.

⚡ Elimination raises your guess odds

A blind guess on a 5-choice question is 20%. Killing two impossible choices makes it 33%; three makes it 50%. Before guessing, always cut choices that are the wrong sign, wrong order of magnitude, or products of an obvious mistake.

6The on-screen calculator — use it well, and sparingly

The calculator is a plain four-function tool. It is there for arithmetic you'd otherwise slip on, not for thinking. Reaching for it on every step is a top pacing leak.

⚡ Do use it for

Long multiplication/division and decimals where a slip is likely
Square roots of non-perfect squares
Confirming a close estimate at the end

⚠️ Don't use it for

Things faster by hand or by estimate (10% of 350, 25 × 4, ½ of 88).
It has no parentheses and no order of operations beyond what you enter — you must feed it operations in the right order yourself.
It can't handle very large results (it shows an error/overflow). Simplify algebraically first.
Fractions: it works in decimals. Keep exact fractions on scratch paper when the answer must be a fraction.
There's a "Transfer Display" button that pastes the result into a Numeric Entry box — use it to avoid re-typing errors.

7Data Interpretation — the mini-section inside Quant

A handful of questions hang off a shared graph or table (bar chart, line graph, pie chart, table, sometimes two linked graphics). They test careful reading more than hard math.

Read the setup first: title, axis labels, units, and any footnotes. A "in thousands" or "% of total" note is usually the trap.
Match the question to the right graphic when two are shown — a common error is pulling a number from the wrong chart.
Estimate before computing. Choices are usually spread out, so a good eyeball read plus elimination beats precise calculation.
Percent vs. amount: a rising percentage can accompany a falling amount if the total shrank. Read which one the question asks for.
These are worth the same as any other question — don't let a dense chart intimidate you into overspending.

Practice these against the Data Interpretation sets in your 5 lb book and the Official Guide — see the Study Plan for where they fit.

8Mental-math speed kit

Fluency here saves seconds on every question and keeps you off the calculator.

Skill	Shortcut
Percent of a number	Find 10% (move the decimal) and 1%, then combine. 35% of 80 = 8×3 + 4 = 28.
Percent symmetry	x% of y = y% of x. 16% of 25 = 25% of 16 = 4.
Fraction ↔ percent	Memorize 1/8=12.5%, 1/6≈16.7%, 1/3≈33.3%, 3/8=37.5%, 5/8=62.5%, 7/8=87.5%.
Multiply by 5	×10 then halve. 48 × 5 = 480/2 = 240.
Squares to know	1–15, plus 16=256, 20=400, 25=625.
Common roots	√2≈1.4, √3≈1.7, √5≈2.24.
Powers of 2	2,4,8,16,32,64,128,256,512,1024.
Divisibility	By 3/9: digit sum. By 4: last two digits. By 6: even & digit-sum÷3.

The full reference lives on the Formula Sheet.

9Avoiding careless errors (worth ~3–5 points)

At the top of the scale, most missed questions aren't "too hard" — they're read wrong or slipped on arithmetic. Build these habits now so they're automatic on test day.

⚠️ The classic careless mistakes

Answering the wrong quantity — solving for x when it asked for 2x, or for the total when it asked for the part.
Units — mixing minutes and hours, cents and dollars, or ignoring "in thousands."
Forgetting the negative root — x² = 9 means x = ±3, not just 3.
Assuming "integer" or "positive" when the problem never said so.
Rounding too early, or rounding the wrong direction on numeric entry.
Mis-reading "must be" vs "could be" vs "is" in must-be-true questions.

⚡ The 5-second finish check

Before you confirm: (1) re-read the last line of the question — did I answer exactly that? (2) Is the sign/units sensible? (3) Is the magnitude in the ballpark of my estimate? This single habit recovers more points than any advanced technique. Log every careless slip in the Error Log so you stop repeating it.

10Test-day checklist

The week before

Take at least one full-length, timed practice test under real conditions (both Quant sections back to back). Use the Master Test plus the official POWERPREP tests.
Review your weak-topic dashboard and error log — do a final targeted pass on your two weakest modules.
Re-read this page and the Formula Sheet. Stop learning brand-new material 2–3 days out; consolidate instead.

The day itself

Sleep, eat, hydrate. A tired brain makes exactly the careless errors in Section 9.
Section 1 is high-leverage — the adaptive engine sets your ceiling from it. Start calm and careful.
Do an easy-first sweep, Mark the hard ones, and circle back.
Never leave a blank. With ~1 minute left, fill every unanswered question with a guess.
Use scratch paper generously; keep the calculator for genuine arithmetic only.
You get an unscored break between sections — use it to reset, breathe, and let a hard section go.

🎯 Bottom line

Know the content (your modules), rehearse the tactics (this page), then execute calmly (the checklist). The score follows.

Follow the 8-week Study Plan → Take a timed Master Test →