Unit 2: Expressions and Equations

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Across
  1. 2. a number that is being added or subtracted in an expression or equation; a constant will always stand alone
  2. 5. the answer to a subtraction problem
  3. 7. terms that have the same variable and exponent
  4. 8. to replace a variable with a number and then evaluate the expression
  5. 12. to follow the order of operations to find the value of an expression when all parts are known
  6. 17. using opposite operations to cancel out coefficients and constants in equations and inequalities to isolate the variable; addition and subtraction are inverses; multiplication and division are inverses
  7. 18. parts of an expression or equation that are separated by addition and subtraction
  8. 19. to distribute or combine all like terms in order to reduce the complexity of an expression
  9. 20. a number that tells how many times a number is multiplied by itself
  10. 23. to use inverse operations to isolate a variable and find its true value
  11. 24. a value, or values, we can put in place of a variable (such as x) that makes the equation or inequality true.
Down
  1. 1. the property that states that numbers being added or multiplied can be grouped in different ways and still achieve the same result
  2. 2. a number multiplied by a variable; a coefficient is always directly in front of a variable
  3. 3. a letter in an equation or inequality that represents an unknown number
  4. 4. a grouping of numbers, variables, and operations with a symbol other than an equal sign such as greater than (>), less than (<), greater than or equal to (>), or less than or equal to (<); an inequality can be solved just like an equation
  5. 6. the property that states that numbers can be added or multiplied in any order and achieve the same result
  6. 9. the answer to an addition problem
  7. 10. the answer to a multiplication problem
  8. 11. that many or less; <
  9. 13. that many or more; >
  10. 14. a grouping of numbers, variables, and operations and an equal sign; an equation can be solved
  11. 15. the property that allows you to multiply a number outside a set of parentheses with each number or term within the parentheses
  12. 16. of Operations the order in which you should perform operations when evaluating an expression with many operations; PEMDAS
  13. 21. a grouping of numbers, variables, and operations without an equal sign; expressions can be evaluated and simplified
  14. 22. the answer to a division problem