"It ain't adding up"

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Across
  1. 3. The smallest number both numbers can divide into.
  2. 7. The point (0,0)
  3. 8. To get the variable alone.
  4. 9. The smallest common denominator between fractions.
  5. 11. To make an expression easier and shorter.
  6. 15. ________ operations are used to move terms around an equation.
  7. 16. A statement that two ratios are equal.
  8. 18. A math phrase without an equals sign.
  9. 19. How many times bigger or smaller a figure becomes compared to the original.
  10. 21. Line that moves left to right.
  11. 22. Tells how many times to multiply a number by itself.
  12. 23. A letter that represents a number.
Down
  1. 1. Multiplying by everything inside of parenthesis.
  2. 2. Steepness of a line.
  3. 4. An ordered pair (x,y)
  4. 5. A number that does not change.
  5. 6. The number multiplied by a variable.
  6. 10. Replace variable with value.
  7. 12. Line that goes up and down.
  8. 13. Actions you perform in math such as addition, subtraction, multiplication, and division.
  9. 14. Where the line crosses an axis.
  10. 17. A separated part of an expression by + or -
  11. 20. Rules for solving expressions.