Roughwork Get early access
For GRE and GMAT quant

Your scratch work is where the lost points start.

You knew how to do it. A sign flipped on line two and the answer was gone. Roughwork reads your working, shows you the step, and makes you fix it, so the same slip stops costing you points.

Get early accessRead the guide to careless mistakes
Your working
Solve 3x − (2x − 5) = 4.
1 3x − (2x − 5) = 4
2 3x − 2x − 5 = 4
3 x − 5 = 4
4 x = 9
Line 2. The minus in front of the bracket reaches the 5 too. What is −(−5)?
Illustration of the feedback format: the first wrong step, marked on your own page, and a question instead of the answer.
Where the points go

Careless isn't random. It has a pattern.

Most lost quant points come from a handful of slips that repeat. An answer key can't see them; your working can.

Sign errors
A minus dropped when you distribute, or a term that crosses the equals sign without flipping.
Arithmetic slips
The method was right; a product or a carry went wrong on line four.
Skipped steps
Two moves done in your head at once, and one of them lost something.
Misread questions
Solving for x when the question asked for x + 2.
What you do with it

Practise the way the test is taken: by hand.

  1. Work a quant problem on the page, the way you will on test day.
  2. See the first step that went wrong, marked on your own working.
  3. Fix it yourself, with a hint if you need one.
  4. Get a few problems on the same slip, until you stop making it.
Exam Pass

One price, until your test.

No subscription to remember to cancel. The pass covers quant practice and feedback from the day you buy it to your test date.

$49once
  • ✓  Feedback on your handwritten quant work
  • ✓  Practice aimed at the mistakes you actually make
  • ✓  Until your test date, up to 180 days
  • ✓  No auto-renewal
In private testing. The pass goes on sale when Roughwork opens.

Questions

Is this a full GRE or GMAT course?

No. Roughwork covers quantitative reasoning and the maths under it. Keep your prep course and official practice tests for curriculum, timing and strategy; use Roughwork to find and fix the errors in your own working.

How does the pass end?

On your test date, or after 180 days, whichever comes first. It doesn't renew.

Do I need an Apple Pencil?

On iPad, yes, to write your working. On iPhone, work on paper and take a photo.

Will it give me the answer?

Only if you ask for the worked solution. By default it marks the step that went wrong and asks the question that helps you fix it.

Guides for quant

All guides ›
Guide How to stop making sign errors on GMAT and GRE quant A sign error is a dropped or flipped negative. Two habits catch most of them: write the sign before the number, and plug your answer back in. 14 September 2026 · 9 min read Guide How to stop losing GMAT and GRE points to careless mistakes Make your work visible, check every step against a fixed routine, and keep an error log. The specific check for each kind of slip. 8 September 2026 · 12 min read