Post on 13-May-2015
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12.1 Writing Expressions and EquationsMr. Williams
GESDjwilliams@gesd40.org
Objective: Write variable expressions and equations.
Image: 'img_9379.jpg'www.flickr.com/photos/60991646@N00/262694744
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Vocabulary Review:Variable Expression an expression consisting of one or more numbers, variables, and operations to be performed.
Equation a mathematical sentence with an equal ( = ) sign.
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Addition Subtraction
Multiplication Division
plus
the sum of
increased by
total
more than
added to minus
the difference of
decreased by
fewer than
less than
subtracted from
times
the product of
mutiplied by
divided by
the quotient of
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4 plus a number x
x minus 10
The product of a number x and 6
12 divided by a number x
Match the words with the expression.
4 + x
x 10 6x
12 x
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Circle the operation words.Write the following words as expressions!
3 added to a number x
The sum of 4 and a number x
The difference of 12 and a number x
9 less than a number x
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We are going to break into groups.
Please listen carefully to the directions.
You will have about 10 minutes at each station.