multistep percent problems – 7th grade – pre-algebra
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Multistep Percent Problems7th Grade – Pre-Algebra
Lesson ObjectiveObjectives: Students will be able to:
Translate percent problems from written form to numerical form.
Convert percentages to fractions and decimals.
Solve multistep percent problems in numerical form.
What do you think of when you hear the word..
sale
sale
What tools do we need to compare different sales? We need to know how to
change percentages to fractions and decimals.
50% = = 0.50
We need to know how to translate percent problems.
Five = 5
50 100
How to change percentages to fractions and decimals:
50 % = fifty percent
_____ 100
Divide 100
centper
50 % = 50_____100
Example Problem
What is 25% of 36?
Example Problem
What is 25% of 36?
x
Example Problem
What is 25% of 36?
x =
Example Problem
What is 25% of 36?
x =0.25
Example Problem
What is 25% of 36?
x =0.25 ●
Example Problem
What is 25% of 36?
x =0.25 ● 36
Example Problem
What is 25% of 36?
x =0.25 ● 36
9=x
Example Problem
What is 30% of 54?
Example Problem
What is 30% of 54?
x
Example Problem
What is 30% of 54?
x =
Example Problem
What is 30% of 54?
x =0.30
Example Problem
What is 30% of 54?
x =0.30 ●
Example Problem
What is 30% of 54?
x =0.30 ● 54
Example Problem
What is 30% of 54?
x =0.30 ● 54
16.2=x
Apple iPod Shuffle
Original Price: $46.00
Sale Price: $35.99
20% discount off all iPods
California Republic Sweatshirt
Original Price: $39.99
Sale Price: $34.99
15% discount off all sweatshirts
Debrief Questions
Evaluation - How does language influence our
understanding of mathematics?
Analysis - What is the difference between the
words “of” and “out of?”
Application - How would you use what you have learned to
help you make better choices when
shopping?