The Words of Arithmetic & Algebra

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Across
  1. 3. Acronym for the biggest number that goes evenly into two numbers
  2. 9. Answer when you add
  3. 10. Acronym for the smallest number two numbers go into evenly
  4. 13. Something you add
  5. 14. This value is positive.
  6. 15. Place just to the right of the decimal point
  7. 17. Answer when you subtract
  8. 18. What the penultimate letter in 6Down stands for
  9. 20. Where the graph hits an 18Down
  10. 21. Another name for 2Down
Down
  1. 1. Acronym for how to divide fractions
  2. 2. That little number above and to the right
  3. 4. "I know I got that equation right because I 4Down"
  4. 5. What 2Down applies to
  5. 6. Acronym for order of operations
  6. 7. Has a certain number as a 19Down
  7. 8. Place just to the left of the decimal point
  8. 11. Answer when you multiply
  9. 12. Answer when you divide
  10. 16. The sum of two opposites is always ____ .
  11. 18. There's x- and y-
  12. 19. Something you multiply