fractions (blog) 8. Egyptian Fractions, Hultsch-Bruins Method (Planetmath) 9. Egyptian Geometry (Planetmath) 10. Egyptian multiplication and division , Wikipedia 11. Heqanakh Papyri (Wikipedia) 12. Kahun Papyrus (Wikipedia), ( Planetmath) 13. Least Common Multiples , modern and ancient (blog) 14. Red Auxiliary Numbers (Wikipedia), ( Planetmath ) 15. Reisner Papyri (blog); (