Warm UpWarm Up Write the operation (+,-, x, ) that corresponds to each phrase.

1. Divided by

2. Difference

3. More than

4. Product

5. Minus

6. Sum

7. Multiplied by

8. Quotient

Writing Algebraic Writing Algebraic ExpressionsExpressions

August 27, 2009

VariableVariable = a symbol, = a symbol, usually a letter, that usually a letter, that

represents one or more represents one or more numbers. numbers.

Algebraic expression = a mathematical phrase that

can include numbers, variables, and operation

symbols.

Write an algebraic expression for Write an algebraic expression for each phrase. each phrase.

1. Seven more than n

n + 7

2. The difference of n and 7

n - 7

3. The product of seven and n

7n

4. The quotient of n and 7

7

n

Define a variable and Define a variable and write an algebraic write an algebraic

expression for each expression for each phrase. phrase.

Two times a number plus five.

Define a variable.Let n = the number

Write.2 * n + 5 2n + 5

Define a variable and Define a variable and write an algebraic write an algebraic

expression for each expression for each phrase.phrase.

1. 9 less than a number

2. The sum of twice a number and 31

3. A number increased by 3.

Write an algebraic Write an algebraic expression for each expression for each

phrase.phrase.

1. 4 more than p2. 12 minus m3. y minus 154. The quotient of n and 85. 23 less than x6. The sum of v and 3

Define a variable and write an Define a variable and write an algebraic expression for each algebraic expression for each phrase.phrase.

1. 2 more than twice a number2. A number minus 113. 9 minus a number4. A number divided by 825. The product of 5 and a number6. The sum of 13 and twice a

number7. The quotient of a number and 6