Singapore Math Worksheet Cleaner
Your child completed a Singapore Math page but needs more practice on the same concept. Upload a photo and InkUndo removes all the handwriting — returning a print-ready PDF in seconds, without buying a new workbook.
Try Free — 2 Sheets on UsNo credit card required
How It Works
1. Snap or Upload
Take a photo of the completed Singapore Math page on your phone, or upload a scanned PDF. Supports JPG, PNG, HEIC, and PDF up to 20 MB.
2. AI Removes Handwriting
InkUndo's AI detects and erases all pencil and pen marks — answers, corrections, doodles — while keeping every printed letter, number, diagram, and bar model intact.
3. Print & Repeat
Download the clean PDF and print it. The page is back to blank — ready for another practice session or a future review.
Why Singapore Math Parents Love InkUndo
Save on Workbooks
Singapore Math workbooks like Primary Mathematics and Dimensions Math are carefully structured. With InkUndo, reuse each page as many times as needed without buying extras.
Ideal for Bar Model Practice
Singapore Math's bar model method needs repetition. Clean a page and let your child practice the same problem type fresh, with different numbers.
Works with Multi-Page PDFs
Upload a full PDF workbook page spread. InkUndo processes up to 10 pages per upload, one credit per page.
Removes Both Pencil and Pen
Whether your child used pencil or marker, InkUndo's AI detects and removes all handwriting while keeping all printed diagrams and instructions.
Frequently Asked Questions
Does it work with Primary Mathematics (US Edition)?
Yes. InkUndo works with any printed Singapore Math material — Primary Mathematics, Dimensions Math, Math in Focus, and others. If it's printed and has handwriting on it, InkUndo can clean it.
Will diagrams and bar models be preserved?
Yes. InkUndo specifically preserves printed diagrams, bar model outlines, number lines, and geometric shapes. Only handwritten marks are removed.
Can I use it for test prep repetition?
Absolutely. Many parents clean practice test papers to let their child repeat them before an exam. Upload the completed test, get a blank version back, and run the drill again.
How much does it cost per page?
Packs start at about €0.20–€0.33 per page. The first 2 sheets are free — no credit card required.
How long does processing take?
Most single pages are cleaned in under 30 seconds. Multi-page PDFs take a few seconds per page.
Ready to Reuse Your Singapore Math Worksheets?
Start with 2 free sheet cleanings — no credit card needed.
Start for Free