Quantitative Reasoning is the most time-pressured section, but the maths itself is rarely hard — it is roughly GCSE level dressed up in busy tables and charts. With well under a minute a question, the marks go to whoever reads the data accurately and plans the calculation before touching any numbers. Every question is worth the same, so the real skill is fast arithmetic plus the discipline to skip anything slow and come back later.
The method
1 · Read the question first, then plan before you calculate
Read the question slowly enough to read it only once, then decide exactly what it gives you and what it wants. Map the shortest route from data to answer in your head before you do any arithmetic — most wasted time is spent calculating things the question never needed. Plan first, maths last.
2 · Read busy data from the outside in
When a chart or table looks overwhelming, take it in order: title for context, then axis labels, headings and the legend, then any footnotes for exceptions. Only once you know which figure you need do you go hunting for the actual number. The vast majority of QR errors are misreads of units or rows, not failed sums.
3 · The percentage ladder for fast mental maths
Build any percentage from a few base moves: 10%, then halve it for 5%, divide by ten for 1%, and a quarter for 25%. Need 35%? That is 25% plus 10%. Need 3%? That is 1% three times. For round figures this is quicker and safer than the calculator, and it keeps your hands free.
4 · Eyeball when precision is not required
If the answer options are far apart, you rarely need an exact figure — estimate, round aggressively, or compare the trend on a graph and pick the option in range. Watching just the final digit of a product or sum can also eliminate wrong options instantly. Save full calculation for when two options sit close together.
5 · Skip aggressively and protect your momentum
Start with an easy set to build pace, and the moment a question turns into a time sink, flag it and move on — every question scores the same, so two quick marks always beat one stubborn one. Aim to spend under about thirty seconds on most questions and to finish with a few minutes of buffer. Treat your first pass like a speed run, then return to the flagged items.
Quick wins
Use the calculator only when it is genuinely faster — ugly division and multi-digit multiplication — and do the round stuff in your head.
Enter calculations through the number pad, pressing keys firmly and unhurriedly; exam keyboards can be unresponsive, and a mis-click costs more than the second it saves.
Estimate before you compute. If your answer lands nowhere near any option, you have misread the data, not done the sum wrong.
Watch the classic unit traps: thousands versus millions, per month versus per year, and percentage versus percentage points.
Keep a short mental checklist of your own recurring slips — currency, units, which value is the 'original' in a percentage change — and run it the instant you finish a question, never at the end of the section.
Now drill Quantitative Reasoning
Practice Quantitative Reasoning free in the real exam interface — the method only sticks when you use it.
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