Across
- 5. Latinized namesake of 'algorithm'
- 9. Pythagorean drowning victim
- 12. "Do not disturb my circles" [dying breath]
- 13. Mathematician and Astronomer, sans Pharaoh
- 14. Bamboo strips showing the first base-ten multiplication chart
- 15. Great architects who apparently couldn't be bothered with mathematical theory
- 16. Egyptians fractions
- 18. Subject derived from the book Calculation by Completion and Balancing
Down
- 1. Egyptian instruction manual for students (antiquarian)
- 2. Babylonian number system
- 3. Introduced Hindu-Arabic numerals to Europe ('son of Bonacci')
- 4. Egyptian instruction manual for students (author)
- 6. Medieval curriculum of arithmetic, geometry, astronomy, and music
- 7. Babylonian reason for 360 degrees in a circle
- 8. First to explain zero as a placeholder and decimal digit
- 9. OG Women of STEM member
- 10. Early bone found with tally marks
- 11. The Pythagorean's greatest fear
- 17. Formal Greek reasoning