
PR3 Topic Review
Authored by Kimberly Inman
Mathematics
7th Grade
CCSS covered
Used 2+ times

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15 questions
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1.
OPEN ENDED QUESTION
5 mins • 1 pt
An object that weighs 120 pounds on Earth weighs 20 pounds on the moon. How much would an object that weighs 300 pounds on Earth weigh on the moon?
Evaluate responses using AI:
OFF
Answer explanation
120 lb on Earth = 20 lb on Moon
→ Ratio = 20 ÷ 120 = 1/6
→ 300 × 1/6 = 50 lb
Answer: 50 pounds
Tags
CCSS.6.RP.A.3B
2.
OPEN ENDED QUESTION
5 mins • 1 pt
The weight of an object on Mars varies directly with its weight on Earth. If a 100-pound object weighs 38 pounds on Mars, how much does a 250-pound object weigh on Mars?
Evaluate responses using AI:
OFF
Answer explanation
100 lb on Earth = 38 lb on Mars
→ Ratio = 38 ÷ 100 = 0.38
→ 250 × 0.38 = 95 lb
Answer: 95 pounds
Tags
CCSS.HSF-LE.A.1B
3.
OPEN ENDED QUESTION
5 mins • 1 pt
A child who weighs 60 pounds on Earth weighs 10 pounds on the moon. How much would a 150-pound adult weigh on the moon?
Evaluate responses using AI:
OFF
Answer explanation
60 lb on Earth = 10 lb on Moon
→ Ratio = 10 ÷ 60 = 1/6
→ 150 × 1/6 = 25 lb
Answer: 25 pounds
Tags
CCSS.6.RP.A.3B
4.
OPEN ENDED QUESTION
5 mins • 1 pt
Emily bought 4 books for $7.25 each and paid 7.5% in sales tax. How much did she pay in total?
Evaluate responses using AI:
OFF
Answer explanation
Cost: 4 × $7.25 = $29.00
Tax: $29.00 × 0.075 = $2.18
Total: $29.00 + $2.18 = $31.18
Answer: $31.18
Tags
CCSS.7.EE.B.3
5.
OPEN ENDED QUESTION
5 mins • 1 pt
Nathan purchased 2 video games at $44.99 each and paid a 5.5% sales tax. What was the total cost?
Evaluate responses using AI:
OFF
Answer explanation
Cost: 2 × $44.99 = $89.98
Tax: $89.98 × 0.055 = $4.95
Total: $89.98 + $4.95 = $94.93
Answer: $94.93
Tags
CCSS.6.RP.A.3C
6.
OPEN ENDED QUESTION
5 mins • 1 pt
Lisa bought 5 journals that each cost $3.95. If the sales tax is 6.25%, what is her final cost?
Evaluate responses using AI:
OFF
Answer explanation
Cost: 5 × $3.95 = $19.75
Tax: $19.75 × 0.0625 = $1.23
Total: $19.75 + $1.23 = $20.98
Answer: $20.98
Tags
CCSS.7.EE.B.3
7.
OPEN ENDED QUESTION
5 mins • 1 pt
A customer ordered a meal costing $12.40, a drink for $2.50, and dessert for $6.10. He received a 15% discount. What was his total bill after the discount?
Evaluate responses using AI:
OFF
Answer explanation
Total: $12.40 + $2.50 + $6.10 = $21.00
Discount: $21.00 × 0.15 = $3.15
Final: $21.00 - $3.15 = $17.85
Answer: $17.85
Tags
CCSS.6.RP.A.3C
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