SWBAT write an algebraic expression from a written expression Do Now Lauren bought a DVD at Best Buy The store was having a special with DVDs 10 off If she got the DVD for 18 what was the original price of the DVD ID: 458928
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Slide1
Writing Algebraic Expressions
SWBAT write an algebraic expression from a written expression.Slide2
Do Now
Lauren bought a DVD at Best Buy. The store was having a special with DVDs 10% off. If she got the DVD for $18, what was the original price of the DVD?
Make each of the following statements true with >, <, or =
2/5 3/6
0.0356 0.2306
0.625 3/8Slide3
Operations to Words
Draw a chart with the words that represent each operation. Write in PENCIL in case you make a mistake. You have 5 minutes and you may work with a partner.
Add
Subtract
Multiply
DivideSlide4
Practicing with Numbers
Write the following as a numerical expression.
The product of ten and seven.
The product of ten and five.
The product of 10 and a number.
Think→what can we use to represent a number when we don’t know the number?Slide5
Expressions
A
numerical expression
contains one or more numbers and operations.
Ex: 4 + 7 5 x 7 – 8
An
algebraic expression
contains at least one variable.
Ex: 4 + n 5t – 8 Slide6
Practice
The sum of ten and a number
10 + n
The quotient of a number and twelve.
n ÷ 12
Eleven decreased by five times a number.
11 – 5n Slide7
Exit Ticket
Write your own algebraic expression using n, 3, and 5. You must use at least 2 operations.
Translate your algebraic expression into written expression.