vocabulary

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Across
  1. 4. the property that is shown: 1+(2+3)= (1+2)+3
  2. 6. the property that is shown: xy = yx
  3. 8. a mathematical statement
Down
  1. 1. the property that is shown: a(b+c)=ab+ac
  2. 2. a symbol (usually a letter) standing for a number
  3. 3. a mathematical statement that shows two expressions equal to each other
  4. 5. to determine the value of a variable
  5. 7. a constant number value that will be multiplied by a variable
  6. 8. a number written above and to the right of another to show it raised to a power
  7. 9. plugging a number into an expression in place of a variable