Unit 1 8th Grade Math

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Across
  1. 3. Expressions that contain the same variables to the same power
  2. 5. the answer to an addition problem
  3. 7. A symbol used to represent a quantity that can change
  4. 8. solutions There are infinitely many answers to the equation.
  5. 10. There is no answer to the equation.
  6. 12. The order in which numbers are added or multiplied does not change the sum or product.
  7. 13. A number multiplied by a variable in an algebraic expression.
  8. 16. the answer to a subtraction problem
  9. 18. The opposite of a number a + (-a) = 0
  10. 19. Adding zero to any number, does not change it's value. Example: a + 0 = a
Down
  1. 1. The distance a number is from zero on a number line. ALWAYS POSITIVE
  2. 2. Changing the grouping of numbers will NOT change the value. For example: (7 + 4) + 8 = 7 + (4 + 8) also works with multiplication Product the answer to a multiplication problem
  3. 4. the answer to a division problem
  4. 6. Two numbers with a product of 1.
  5. 9. a(b+c)=ab+ac
  6. 11. A term without a variable
  7. 14. The multiplicative inverse of a number. For example the reciprocal of 2/3 is 3/2.
  8. 15. When any number is multiplied by 1, the product is the number, a * 1 = a
  9. 17. A mathematical phrase that contains operations, numbers, and/or variables.
  10. 20. A mathematical sentence that contains an equals sign.