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Writing Expressions and Equations from Situations
Presentation
•
Mathematics
•
8th Grade
•
Practice Problem
•
Medium
+5
Standards-aligned
Larry Walker
Used 6+ times
FREE Resource
6 Slides • 16 Questions
1
Multiple Choice
BELL-RINGER QUESTION #1
Figure I and Figure II are similar quadrilaterals.
Which proportion must be true?
ba=28
23.2=8a
6.4b=58
3.22=ab
2
3
Directions: Follow along with the video and take note for writing algebraic expressions from situations to solve equations.
VIDEO NOTES: WRITE ALGEBRAIC EXPRESSIONS TO SOLVE EQUATIONS
4
5
Match
PARTNER PRACTICE #1
WRITING ALGEBRAIC EXPRESSIONS FROM SITUATIONS
Determine which algebraic expression should correspond to the given students description of tabs collected.
Sadie collected the least number of pull tabs.
Emma collected 15 more pull tabs than Sadie.
Ricky collected 4 times as many as Emma.
Lily collected 10 fewer than Ricky.
x
(x + 15)
4(x + 15)
4(x + 15) - 10
x
(x + 15)
4(x + 15)
4(x + 15) - 10
6
7
Math Response
INDEPENDENT PRACTICE #2
WRITING ALGEBRAIC EXPRESSIONS FROM SITUATIONS
Determine the algebraic expression used to describe the situation for the students number of DVDs received, colored in green.
•Dan has the fewest.
•Donna has 7 more than Dan.
•Britney has twice as many as Donna.
•Jimmy has 3 times as many as Dan.
•Kenesha has 6 fewer than Donna.
8
Math Response
INDEPENDENT PRACTICE #3
WRITING ALGEBRAIC EXPRESSIONS FROM SITUATIONS
Determine the algebraic expression used to describe the situation for the students number of DVDs received, colored in green.
•Dan has the fewest.
•Donna has 7 more than Dan.
•Britney has twice as many as Donna.
•Jimmy has 3 times as many as Dan.
•Kenesha has 6 fewer than Donna.
9
Math Response
INDEPENDENT PRACTICE #4
WRITING ALGEBRAIC EXPRESSIONS FROM SITUATIONS
Determine the algebraic expression used to describe the situation for the students number of DVDs received, colored in green.
•Dan has the fewest.
•Donna has 7 more than Dan.
•Britney has twice as many as Donna.
•Jimmy has 3 times as many as Dan.
•Kenesha has 6 fewer than Donna.
10
Math Response
INDEPENDENT PRACTICE #5
WRITING ALGEBRAIC EXPRESSIONS FROM SITUATIONS
Determine the algebraic expression used to describe the situation for the students number of DVDs received, colored in green.
•Dan has the fewest.
•Donna has 7 more than Dan.
•Britney has twice as many as Donna.
•Jimmy has 3 times as many as Dan.
•Kenesha has 6 fewer than Donna.
11
Math Response
INDEPENDENT PRACTICE #6
WRITING ALGEBRAIC EXPRESSIONS FROM SITUATIONS
Determine the algebraic expression used to describe the situation for the students number of DVDs received, colored in green.
•Dan has the fewest.
•Donna has 7 more than Dan.
•Britney has twice as many as Donna.
•Jimmy has 3 times as many as Dan.
•Kenesha has 6 fewer than Donna.
12
Match
PARTNER PRACTICE #7
SOLVING LINEAR EQUATIONS OF SITUATIONS
If the original group of the five friends has a total of 182 DVDs all together, then determine how many does each person have using the algebraic expressions to write an equation.
NOTE: Write the expressions as a simplified equation to solve for variable-x.
Dan's DVDs
Donna's DVDs
Britney's DVDs
Jimmy's DVDs
Kenesha's DVDs
20 DVDs
27 DVDs
54 DVDs
60 DVDs
21 DVDs
20 DVDs
27 DVDs
54 DVDs
60 DVDs
21 DVDs
13
14
Math Response
PARTNER PRACTICE #8
SOLVING LINEAR EQUATIONS OF SITUATIONS
Determine the algebraic expression used to describe the situation for the money raised at the different locations, colored in green.
•Back Street location raised the least amount.
•The Main Street location raised $50 more than the Back Street location.
•The Washington Street location raised $50 more than half the amount raised at the Back Street location.
15
Math Response
PARTNER PRACTICE #9
SOLVING LINEAR EQUATIONS OF SITUATIONS
Determine the algebraic expression used to describe the situation for the money raised at the different locations, colored in green.
•Back Street location raised the least amount.
•The Main Street location raised $50 more than the Back Street location.
•The Washington Street location raised $50 more than half the amount raised at the Back Street location.
16
Math Response
PARTNER PRACTICE #10
SOLVING LINEAR EQUATIONS OF SITUATIONS
Determine the algebraic expression used to describe the situation for the money raised at the different locations, colored in green.
•Back Street location raised the least amount.
•The Main Street location raised $50 more than the Back Street location.
•The Washington Street location raised $50 more than half the amount raised at the Back Street location.
17
Multiple Choice
PARTNER PRACTICE #11
SOLVING LINEAR EQUATIONS OF SITUATIONS
The middle school dance team had 3 separate car washes on Saturday to raise money for new uniforms.
•The Main Street location raised $50 more than the Back Street location.
•The Washington Street location raised $50 more than half the amount raised at the Back Street location.
How much did the dance team raise at the Back Street location if they raised a total of $600?
$200
$220
$450
$600
18
Multiple Choice
PARTNER PRACTICE #12
SOLVING LINEAR EQUATIONS OF SITUATIONS
The middle school dance team had 3 separate car washes on Saturday to raise money for new uniforms.
•The Main Street location raised $50 more than the Back Street location.
•The Washington Street location raised $50 more than half the amount raised at the Back Street location.
How much did the dance team raise at the Main Street location if they raised a total of $800?
$250
$280
$330
$540
19
Multiple Choice
PARTNER PRACTICE #13
SOLVING LINEAR EQUATIONS OF SITUATIONS
The middle school dance team had 3 separate car washes on Saturday to raise money for new uniforms.
•The Main Street location raised $50 more than the Back Street location.
•The Washington Street location raised $50 more than half the amount raised at the Back Street location.
How much did the dance team raise at the Washington Street location if they raised a total of $400?
$110
$120
$240
$60
20
21
Math Response
PARTNER PRACTICE #14
SOLVING LINEAR EQUATIONS OF SITUATIONS
Write the linear equation that represents the situation for the money spent by the brothers on their vacation, colored in green.
•Matt spent $25 less than Todd.
•Jeff spent 3 times as much as Matt.
How much did each brother spend if they spent a total of $275?
22
Multiple Choice
EXIT TICKET 01/17 - TEK 8.8C
Three waiters at a local restaurant earned different amounts of money the past week. Jennifer earned $40 less than twice the amount Tony earned. Chris earned $60 more than Tony. How much did Chris earn if they earned a total of $900 altogether?
$400.00
$280.00
$220.00
$300.00
BELL-RINGER QUESTION #1
Figure I and Figure II are similar quadrilaterals.
Which proportion must be true?
ba=28
23.2=8a
6.4b=58
3.22=ab
Show answer
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MULTIPLE CHOICE
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