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# Algebraic expressions

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### Algebraic expressions

1. 1. A lgebraic Ex pr essions
2. 2. Var iable – is a letter or symbol that r epresents an unknown quantity. X yZ n t
3. 3. A lgebraic ex pr essioncontaining at least one variable and does not contain an equal sign EX: T + 3
4. 4. When writing an algebr aic expression, r emember these items…
5. 5. 1. Decide on a variable to r epr esent the unknown =b P=
6. 6. 2. Decide what oper ation r epresents the situation
7. 7. 3. If possible, check your expression by plugging in values to see if the answer makes sense.
8. 8. If given an expression and the value of the variable, simply plug the value in and solve. m + 8 m = 2 2 + 8 = 10
9. 9. Words That Lead to Subtraction Decreased – Less – Difference Minus – How many more Words That Lead to Division Divided by – Quotient
10. 10. Words That Lead to Addition Sum – More than – Increased Plus – Altogether Words That Lead to Multiplication Times – Product – Of
11. 11. Practice Problems 1. Five plus y 2. 6 times q 3. 2 less than x
12. 12. Pr actice Problems 4. A cake will serve 12 people. Write an expr ession for how many people will C cakes serve?
13. 13. Practice Problems 5.The drama club sold 60 mor e tickets on Satur day as on Fr iday. Write an expr ession for the number of tickets sold on