1.
A number in front of a variable (e.g. in 3x, 3 is the coefficient)
2.
A mix of numbers, variables and operations that does not contain an equals sign (=) (e.g. 3x + 2)
3.
A statement – with an equals sign – that two expressions are equal (e.g. 3x + 2 = 11)
4.
An equation that is always true, no matter what values are substituted (e.g. a + b = b + a ) and can be written with the identity sign (≡)
5.
A rule written with symbols
6.
A single number, a variable, or both, multiplied together (e.g. 5, x, 3x)
7.
What we call terms with the same variable and power (e.g. 2x and 5x)
8.
What we call terms with different variables or powers (e.g. 3x and 4y)
9.
A letter that stands for an unknown number e.g. x, y
10.
A type of expression with letters, numbers and operations (e.g. 2x – 5)
