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✅ Requirements (v1): :

  • Adjustable number of problems.
  • Adjustable number size (e.g., 1 to 4 digits).
  • Comma separators for numbers ≥ 1000.
  • Toggle for show/hide answers (screen only).
  • Printer-friendly layout (1 problem per "window" grid).

🧩 Features Explained

Feature How to Use Number of Problems Set how many cards to generate Digits Choose 1 to 4 digits (e.g., 9999 + 9999) Comma separators Built-in via toLocaleString() Show/Hide Answers Toggle button (on screen only, won't print if hidden) Printer-Friendly Clean grid layout, no unnecessary UI in print view Randomized values New problems each time you click "Generate"

Great additions! Let's break this down into a clean, modular setup:

✅ Features Requirements Checklist (v2)

  • ✅ Split files: index.html, styles.css, script.js

  • ✅ LocalStorage integration (remembers last settings)

  • ✅ Dynamic <h1> title (e.g., “3-digit Addition Window Cards”)

  • ✅ Font size adapts for screen and A4 print

  • ✅ Print-only headers:

    Name: ____     Score: ____
Teacher: ____  Date: ____

🗂 Folder Structure

addition-cards/
├── index.html
├── styles.css
└── script.js

Files:

✅ Summary

  • A clean modular app with saved preferences
  • Dynamic title and font scaling for digital and print use
  • Print headers to simulate store-bought work cards
  • Easy customization and scalability (can expand to subtraction or other operations later)

✅ Features Requirements Checklist (v3)

  • Header revision: Style the print only header as (evenly spaced across page width) single row specified as:
    • Name: ____ Grade: ____ Date: ____
  • adjustable font size control next to print buttton; lower limit on font size should allow for 10 by 10 grids compactly laid out for a single A4 page.
  • limit number of digits of addends to 6, e.g., 0 to 999,999
  • for each problem, add horizontal row of "=" signs under the addends, e.g.,
  • current layout:
   94,978
+  32,375
= 127,353
  • revised layout:
   94,978
+  32,375
  =======
= 127,353

📌 Summary of Today’s Work ( 2025-07-02 Wed Jul 2 )

1) Done

  • Integrated all four operations (+ − × ÷) with dynamic title updates and operator-specific logic
  • Added constraint toggles for "Avoid Carrying" (Addition) and "Avoid Borrowing" (Subtraction)
  • Reorganized control layout into two clean rows: inputs on top, action buttons below
  • Visual ⚠ markers show when constraints are violated
  • Styles and layout tweaked to preserve A4 compatibility and perfect overlay alignment

2) In Progress

  • Fine-tuning constraint checkbox visibility to minimize UI layout shift
  • Improving division problem generator to avoid trivial or redundant equations

3) Blockers

  • None currently, but upcoming: constraint tuning for more realistic math problems (e.g., avoid “99 ÷ 1” and “same ÷ same” patterns)