7.NS.A.1b and d

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Across
  1. 3. To reduce an expression to its simplest form.
  2. 5. A number that, when added to a given number, results in zero. Example: The additive inverse of 7 is -7.
  3. 11. The operation of finding the difference between two numbers.
  4. 12. A property that relates multiplication and addition or subtraction. Example: a(b + c) = ab + ac.
  5. 13. Rules that apply to numbers and operations (such as addition and subtraction) that help simplify or solve expressions.
Down
  1. 1. Property A number plus its opposite equals zero. Example: 5 + (−5) = 0.
  2. 2. A number that can be expressed as a fraction with integers.
  3. 4. of Addition Adding zero to a number does not change its value. Example: a + 0 = a.
  4. 6. A combination of numbers and operations without an equal sign.
  5. 7. The result of a subtraction operation.
  6. 8. A method or approach used to solve a mathematical problem.
  7. 9. The grouping of numbers when adding doesn’t affect the sum. Example: (a + b) + c = a + (b + c).
  8. 10. The order of adding numbers doesn’t affect the sum. Example: a + b = b + a.