Missing Operator Maker
Create missing arithmetic operator (+, -, ×, ÷) math logic puzzles.
Page setup
Saved for all puzzle tools on this device.
Worksheet options
8.5" × 11" (US Letter) page, 0.75" margins on every side, no bleed. Downloads are 300 DPI (2550 × 3300 px) and match the preview.
How to use this tool
Set up your KDP page
Choose the KDP trim size (5" × 8" up to 8.5" × 11", square and A4 included), the print size (standard, large print or extra large) and the margins for your page count. The layout adapts to the page, and the setting is kept for every puzzle tool.
Select Mode
Choose single operators or dual sequence logic.
Generate
Click Generate to build unique logical evaluations.
Download pages or a whole book
Download the missing operator page and its answer key as 300 DPI PNG or vector SVG, or build one PDF with 10, 25 or 50 different puzzles, numbered, with the solutions at the back.
Frequently asked questions
Do these follow order of operations?
For elementary accessibility, dual sequences are evaluated strictly left-to-right.
What is a missing operator puzzle?
An equation with the sign removed, such as 6 ? 3 = 18. The student chooses +, −, × or ÷ to make it true, which practises number sense and operations.
Who are missing operator worksheets for?
Students in grades 2 to 5, depending on the operations and number range used.
Which KDP trim sizes and margins does the Missing Operator Maker support?
Every Amazon KDP paperback trim size from 5" × 8" to 8.5" × 11", including 6" × 9", 7" × 10", 8" × 10", 8.5" × 8.5" square and A4. Margins go from 0.375" to 0.875" to match KDP's inside-margin rule for your page count, with no bleed. Anything that would cross a margin is scaled to fit, so pages never break.
Can I make large print Missing Operator pages?
Yes. Choose Large print or Extra large and every text, number and line prints about 1.4× or 1.75× bigger. Below the preview the page shows its smallest text size in points: large print books usually use 14 pt or more, extra large 18 pt or more. For grids, a smaller grid or a larger trim size keeps the letters big.
How many Missing Operator puzzles can I make?
As many as you need. Every press of Generate builds a new page in your browser, and the Puzzle book PDF button collects 10, 25 or 50 different pages in one file, ready to add to your interior.
Can I sell books made with these pages on Amazon KDP?
Yes, you can use the pages in your own books, including books you sell on KDP. Use your own or public-domain words and titles and avoid trademarked names. Add your own cover, instructions and design so the book offers real value to buyers.
Are the files print-ready for KDP?
Yes. PNG files are 300 DPI at the exact trim size (the DPI is stored in the file) and SVG files are vectors, both with the content inside your margins. Place them in your interior file in Word, Affinity, InDesign or Canva and export a PDF for KDP, or use the multi-page PDF directly.
Expand your logic puzzle portfolio
Order professionally generated algorithmic logic interior PDFs.