Expressions
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Expression | a mathematical combination of numbers, variables, and operations; does not contain an equal sign!
Examples: 5 + 23, 4x, 6x + y^2
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| Constant | a term that does not contain a variable. For example, 5 is the constant in the expression -2x + 5.
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| Variable | a letter or other symbol used to represent an unspecified number or value. For example, x is the variable in the expression -2x + 5.
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| Coefficient | the numerical factor of a term; the number being multiplied by the variable. For example, -2 is the coefficient in the expression -2x + 5.
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| Term | a number, a variable, or a product or quotient of numbers and variables; terms are separated by addition or subtraction signs. For example, the expression -6 + 4y - 15m has three terms (-6, 4y, and -15m).
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| Like Terms | terms that contain the same variables raised to the same power; for example, 5x and 3x are like terms
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| Distributive Property | to multiply a sum by a number, multiply each addend of the sum by the number outside the parentheses.
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| Standard Form of an Expression | an expression in simplest terms; all like terms are combined
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| Constant of Proportionality | the constant ratio to which a proportional relationship simplifies
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Math7
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