maths crossword

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Across
  1. 3. a numerical or constant quantity placed before and multiplying the variable in an algebraic expression
  2. 5. subtraction
  3. 8. a collection of symbols that jointly express a quantity.
  4. 9. make (something) simpler or easier to do or understand.
  5. 11. terms, terms that have the same variables and powers.
  6. 12. become or make larger or more extensive.
  7. 13. occurring continuously over a period of time.
Down
  1. 1. dividing
  2. 2. multiplying
  3. 4. letters used in algebra and they stand for numbers.
  4. 6. the action of replacing someone or something with another person or thing.
  5. 7. letters used in algebra and they stand for numbers.
  6. 10. addition
  7. 12. find a numerical expression or equivalent for (an equation, formula, or function).