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Unit 4 Math vocab
Question | Answer |
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factor | Factors are numbers you can multiply together to get another number: Example: 2 and 3 are Factors of 6, because 2 × 3 = 6. |
variable | A symbol for a number we don't know yet. |
constant | In Algebra, a Constant is a number on its own, or sometimes a letter such as a, b or c to stand for a fixed number. Example: in "x + 5 = 9", 5 and 9 are |
base | The number that is going to be raised to a power. Example: in 82, 8 is the base |
exponent | The Exponent of a number says how many times to use that number in a multiplication. It is written as a small number to the right and above the base number. In this example: 8 2 = 8 × |
perfect square | The number that is going to be raised to a power. Example: in 82, 8 is the base |
PEMDAS | |
algebraic expression | can contain at least one variable and at least one operation...For example, n+2 represents the sum of an unknown number and two. |
order of Operations | Order of operations tells us what order we are supposed to do things in a math problem. For example, what's the answer to this? 4 + 10 x 2 Do we do the 4 + 10 first? Or the 10 x 2 first? Here is the official order of operations: (1) Parenthesis |
Numerical Expressions | An expression that has a number in it |
coeffecient | A Coefficient is a number used to multiply a variable (4x means 4 times x, so 4 is a coefficient) Sometimes a letter stands in for the number: Example: ax2 + bx + c x is a variable a and b are coefficients c is a constant |
term | A Term is either a single number or a variable, or numbers and variables multiplied together. |
expression | An Expression is a group of terms (the terms are separated by + or − signs) |
equation | That equation says: what is on the left (x + 2) is equal to what is on the right (6) So an equation is like a statement "this equals that" |
distributive properties |