Across
- 2. for addition tells us that zero added to any number is the number itself. Zero is called the "additive identity." The identity property for multiplication tells us that the number 1 multiplied times any number gives the number itself. The number 1 is called the "multiplicative identity."
- 6. Expressions that have the same value.
- 8. you can add or multiply regardless of how the numbers are grouped.
- 10. A number used to multiply a variable. Example: 6z means 6 times z, and "z" is a variable, so 6 is a _____.
- 11. are terms whose variables (and their exponents such as the 2 in x2) are the same.
- 12. refers to moving stuff around. For addition, the rule is "a + b = b + a"; in numbers, this means 2 + 3 = 3 + 2. For multiplication, the rule is "ab = ba"; in numbers, this means 2×3 = 3×2.
Down
- 1. equal in value, amount, function, meaning, etc.
- 3. algebra property which is used to multiply a single term and two or more terms inside a set of parentheses. 2(3 + 6)
- 4. is any number that can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q.
- 5. a mathematical phrase that can contain ordinary numbers, variables (like x or y) and operators (like add,subtract,multiply, and divide).
- 7. include addition, subtraction, multiplication, division, and exponentiation
- 9. a first-order equation involving two variables: its graph is a straight line.