algebraic expressions
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Algebraic Expressions
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Variable – is a letter or symbol that represents an unknown quantity. X y Z n t
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Algebraic expression- containing at least one variable and does not contain an equal signEX: T + 3
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When writing an algebraic expression, remember these items…
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1. Decide on a variable to represent the unknown
= b P =
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2. Decide what operation represents the situation
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3. If possible, check your expression by plugging in values to see if the answer makes sense.
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If given an expression and the value of the variable, simply plug the value in and solve.
m + 8 m = 22 + 8 = 10
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Words That Lead to Subtraction
Decreased – Less – Difference Minus – How many more
Words That Lead to Division
Divided by – Quotient
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Words That Lead to Addition
Sum – More than – IncreasedPlus – Altogether
Words That Lead to Multiplication
Times – Product – Of
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Practice Problems
1. Five plus y
2. 6 times q
3. 2 less than x
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Practice Problems
4. A cake will serve 12 people. Write an expression for how many people will C cakes serve?
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Practice Problems5.The drama club sold
60 more tickets on Saturday as on Friday. Write an expression for the number of tickets sold on
Saturday.