words for math

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Across
  1. 2. reducing a number with two dots
  2. 5. a triangle of problems in order
  3. 8. a set of numbers that have been written together
  4. 9. multiplying a number with an x
  5. 10. letters in math problems normally unknown a number we do not know
  6. 11. involving things with x,-, +,
  7. 12. when a factor is multiplied by the sum/addition of two terms
Down
  1. 1. answer to a division problem
  2. 3. a single mathematical expression
  3. 4. answer to a multiplication problem a mathematical equation
  4. 6. value of a number in a certain order is a number used in different ways
  5. 7. with addition and multiplication of numbers, you can change the grouping of the numbers in the problem and it will not affect the answer commutative-property same thing as on above