Inequality Word Problems
Presentation
•
Mathematics
•
7th - 9th Grade
•
Practice Problem
•
Medium
+7
Standards-aligned
Scott Donnelly
Used 11+ times
FREE Resource
5 Slides • 11 Questions
1
Inequality Word Problems
Mr. Donnelly
Algebra 1
2
Key Questions
• How do we set up inequality word problems?
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Inequality Words
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Open Ended
What are some words that mean addition?
5
Open Ended
What are some words that mean multiplication?
6
Example
Keith has $500 in a savings account at the beginning of the summer. He wants to have at least $200 at the end of the summer. He withdraws $25 per week for food, clothing, and movie tickets. How many weeks can Keith withdraw money from his account?
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Example
You have taken 4 tests in a class and you want to get an average of a 90. You have gotten an 84, 89, 81 and 96. What do you have to get on the fifth test to have an average of at least a 90?
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Multiple Select
You have taken 4 tests in a class and you want to get an average of a 90. You have gotten an 84, 89, 81 and 96. What do you have to get on the fifth test to have an average of at least a 90? How could you write the inequality?
350+x≥450
350+x≤450
350−x≥450
84+89+81+96+x≥450
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Draw
You have taken 4 tests in a class and you want to get an average of a 90. You have gotten an 84, 89, 81 and 96. What do you have to get on the fifth test to have an average of at least a 90?
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Open Ended
Can you get a 90 average on the 5 tests?
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Multiple Choice
A taxi charges a flat rate of $1.75, plus an additional $0.65 per mile. If Erica has at most $10 to spend on the cab ride, how far could she travel? How would you set this inequality up?
1.75m+.65≥10
1.75+.65m≥10
1.75+.65m≤10
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Draw
A taxi charges a flat rate of $1.75, plus an additional $0.65 per mile. If Erica has at most $10 to spend on the cab ride, how far could she travel? Round nearest mile.
1.75+.65m≤10
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Open Ended
Why do you think in the last problem, we should round the number down instead of rounding up?
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Multiple Choice
Ryan is a wrestler trying to make weight. He currently weighs 200 lbs. If he cuts 2 lbs. per week, how many weeks will it take him to weigh less than 175 lbs.? How would you write the inequality.
200+2w>175
200−2w>175
200−2w<175
175+2w≥200
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Draw
Ryan is a wrestler trying to make weight. He currently weighs 200 lbs. If he cuts 2 lbs. per week, how many weeks will it take him to weigh less than 175 lbs.?
200−2w<175
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Open Ended
Why do you think in the last problem, we should round the number up instead of rounding down?
Inequality Word Problems
Mr. Donnelly
Algebra 1
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