advance algebra part 2

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Across
  1. 2. the part of mathematics in which letters and other general symbols are used to represent numbers and quantities in formulae and equations
  2. 7. the process or skill of multiplying
  3. 8. the process or skill of calculating the total of two or more numbers or amounts
  4. 9. any of the natural numbers (positive or negative) or zero
Down
  1. 1. The distance a number is from zero on a number line
  2. 3. take away (something) from something else so as to decrease the size, number, or amount
  3. 4. To multiply 2 binomials and find the sum of the products
  4. 5. Ordered pairs that identify points on a coordinate plane. (x,y)
  5. 6. A polynomial of two terms