DeltaMath support

Get Delta Math Answers in 2 Seconds

FastSolve solves DeltaMath problems natively — multiple choice, fill-in-the-sentence dropdowns, and the typed-math input box — right on the deltamath.com problem page. No answer keys, no copy-pasting into another tab.

Updated July 2026

Question types

Which DeltaMath question types does FastSolve solve?

FastSolve detects the question type automatically and formats the answer for the right input.

FastSolve support by DeltaMath question type
Question typeSupported
Multiple choiceSupported
Fill in the sentence (dropdowns)Supported
Typed math (MathQuill input)Best-effort fill — the answer is always shown even when the editor rejects programmatic entrySupported
Problems with graphs or diagramsThe graph is captured and sent to the vision model with the questionSupported
Interactive graphing inputFastSolve tells you what to plot; you place the points yourselfNot supported
Show-your-work uploadsWritten work is yours to photograph and uploadNot supported

Why Delta Math answer keys and hacks don't work

DeltaMath builds every problem from a template with randomized values: two students on the same assignment see the same question shape with different numbers, and retrying a problem regenerates it. That's why the classic routes to Delta Math answers fail — answer-key sites publish solutions to someone else's random draw, and the inspect-element and GitHub-script tricks that once exposed answers in the page source were patched long ago.

The approach that does work is solving your actual instance. FastSolve is a Chrome extension with a native DeltaMath adapter: double-click a problem and it reads the question and its math notation straight from the page, has Claude or GPT-4o solve it, and fills DeltaMath's answer input in about 2 seconds. Nothing is looked up — every answer is computed from the numbers on your screen.

What FastSolve handles on DeltaMath

DeltaMath asks for answers in three main shapes, and FastSolve has a dedicated handler for each. Multiple-choice problems get the correct radio selected — even when every option is a rendered math expression. Fill-in-the-sentence problems ("the quadrilateral is most specifically a ___ because ___") get each dropdown set to the right option. Typed-math problems get the solved expression written into DeltaMath's MathQuill input box.

Reading the problem correctly is half the job. DeltaMath renders math with KaTeX, which stores each expression three ways in the page — general-purpose tools that scrape the text end up with doubled garbage like "x16x^2+51=56x". FastSolve extracts exactly one clean representation (2x^2+x-9=0), and when a problem includes a graph it captures the image for the vision model, so the AI answers the problem you actually see.

How it works

How do you use FastSolve on DeltaMath?

  1. 1

    Install the FastSolve Chrome extension

    Add FastSolve from the Chrome Web Store and sign in. It runs in Chrome, Edge, Brave, or Arc, and the free tier (10 solves/day) needs no credit card.

  2. 2

    Open your DeltaMath assignment

    Start any assignment or test on deltamath.com — student accounts included. FastSolve detects DeltaMath automatically; there is nothing to configure.

  3. 3

    Double-click the problem

    FastSolve reads the question and its math notation exactly as DeltaMath renders it, routes it to Claude or GPT-4o, and fills the answer — the right radio button, each dropdown in the sentence, or the typed-math box.

  4. 4

    Check the answer and submit

    DeltaMath often requires a specific form (simplified fraction, exact value, rounded decimal), so glance at the filled answer before you hit Submit Answer.

Illustration: FastSolve highlighting the detected answer on a DeltaMath quiz question
FastSolve detects the question and highlights the answer — illustration.

Social proof

What students say about FastSolve

FastSolve works across DeltaMath and every major LMS. These are verbatim reviews from its Chrome Web Store listing.

Rated 5 out of 5 stars
I've been using FastSolve Chrome Extension for a bit now and honestly it's super fast and really easy to use. You literally just double click a question and it gives you an answer almost instantly, which is kinda crazy. It works on a lot of different types of questions too, not just multiple choice. What I like most is how lightweight it is; it doesn't slow down my browser at all and everything feels smooth. The answers are usually accurate and helpful, especially when I'm stuck or just need a quick explanation.
Saira Channa

Chrome Web Store review

Rated 5 out of 5 stars
This extension actually surprised me. I installed it just to try it out and it solved a few homework questions instantly.
Brain Jack

Chrome Web Store review

Rated 5 out of 5 stars
Dope tool! Easy peasy to use and pretty quick. Faster than using co-pilot for Edge as well.
Andre Green GP

Chrome Web Store review

Questions solved
50,000+
Average accuracy
98%
Average response time
< 2s

Pricing

How much does FastSolve cost for DeltaMath?

Start free with 10 solves a day. Upgrade to Pro for unlimited solves across DeltaMath and every supported LMS.

FastSolve pricing plans for DeltaMath
PlanPriceWhat you get
Free$010 solves per day — no credit card required.
Pro$9.99/week · $19.99/month · $99/yearUnlimited solves, every question type, and dual-AI routing.

Invisible mode

What proctors and DeltaMath can — and can't — see

  • Native adapter for deltamath.com — detection is automatic on every DeltaMath page, including student portals.

  • Reads DeltaMath's KaTeX-rendered math as clean notation (2x^2+x-9=0), so the AI sees the problem exactly as written.

  • No overlay, no popup, no extra tab: screenshare and screen recordings show only the DeltaMath problem page.

FAQ

FastSolve on DeltaMath: FAQ

Yes — natively. FastSolve ships a dedicated DeltaMath adapter that detects deltamath.com automatically, reads the problem directly from the page, and fills the answer in place. Multiple choice, fill-in-the-sentence dropdowns, and DeltaMath's typed-math input box are all handled — no copy-pasting the question into a separate tab.

Install the FastSolve Chrome extension, open your DeltaMath assignment, and double-click the problem. FastSolve reads the question — including the rendered math notation — sends it to Claude or GPT-4o, and fills the answer field in about 2 seconds. Because DeltaMath randomizes the numbers per student, solving your actual problem beats hunting for an answer key generated from someone else's version.

Not a reliable one. DeltaMath generates each student's problem with randomized values, so static answer keys and GitHub scripts go stale immediately — the numbers in someone else's key don't match the ones on your screen. An AI solver is the practical alternative: FastSolve solves the exact problem instance you're shown instead of looking up a pre-computed answer.

Yes. DeltaMath uses a MathQuill editor for typed-math answers, and FastSolve writes the solved expression into it programmatically. The fill is best-effort by design: if a particular MathQuill build rejects programmatic entry, FastSolve reports that honestly and still shows you the answer, so worst case you type a short expression it already solved.

DeltaMath's teacher dashboard tracks attempts, time per problem, and correctness — not browser-extension input. FastSolve fills the answer field the way normal input arrives, draws no overlay on the page, and is invisible on screenshare. There's also no tab-switching, which is what usually gives external answer sites away.

FastSolve reports a 98% accuracy figure on its homepage trust badge, and DeltaMath plays to its strengths: FastSolve reads the math notation exactly as DeltaMath renders it — 2x^2+x-9=0, not a garbled transcription — so the AI solves the same problem you see, and harder problems route to Claude or GPT-4o. Still read the answer before submitting; DeltaMath frequently demands a specific form like a simplified fraction or an exact value.

Problems that include a graph or diagram are read via screenshot — FastSolve captures the visual and sends it to the vision model with the question, so the answer accounts for what's drawn. Questions that ask you to plot on the graph yourself aren't auto-filled: FastSolve gives you the answer (the points or line to plot) and you place it by hand.

FastSolve is a study aid — use it to check answers, unstick yourself on a problem, and clear practice sets faster, not to outsource graded work wholesale. DeltaMath is usually assigned as practice, but graded DeltaMath tests fall under your school's academic-integrity policy. Confirm what your teacher allows before using any AI solver on graded work, and take responsibility for how you use the answers.