Pre-Algebra Chapter 2

12345678910
Across
  1. 5. The number 0 is called the _______ Identity because adding 0 to any number does not change the number. Ex. 67+0=67
  2. 8. To find the numerical value of.
  3. 10. The ________ Property states that if a sum contains terms that are grouped, then the sum may be grouped differently with no effect on the total. 21+34+12=67 so 12+21+34=67
Down
  1. 1. The number 1 is called the _______ Identity because multiplying any number by 1 does not change the number. Ex. 67 * 1 = 67
  2. 2. A letter or symbol used to represent an unknown number.
  3. 3. ______ of Operations is the specific order in which certain operations are to be carried out to evaluate or simplify expressions: parentheses (or other grouping symbols), exponents (powers or roots), multiplication and division (from left to right), and addition and subtraction (from left to right).
  4. 4. a single number, variable, or the product of numbers and variables. In an expression, terms are separated by addition or subtraction signs.
  5. 6. The Additive ________ is the number you need to add to a given number to get a sum of 0. 67+(-67)=0
  6. 7. Combining two or more ______ Terms simplifies an expression by summing constants and summing those variable terms in which the same variables are raised to the same power.
  7. 9. This property states that if two terms are added, then the order may be reversed with no effect on the total. 67+0=0+67