8th Grade Best Buys and Unit Prices Worksheet — Level 1 — Practice Set 3 — Answers
Answer sheet with worked solutions for the 8th Grade ratios & rates worksheet.
8th Grade Best Buys and Unit Prices Worksheet — Level 1 — Practice Set 3 — Answers
Find the price for the same amount of each (the unit price), then compare. Show your work.
1.Juice costs $8.60 for 2 L. What is the price per 100 mL?
Answer: $0.43
- $8.60 ÷ 20 = $0.43 per 100 mL
2.Rice costs $2.50 for 500 g. What is the price per 100 g?
Answer: $0.50
- $2.50 ÷ 5 = $0.50 per 100 g
3.Rice costs $3.85 for 500 g. What is the price per 100 g?
Answer: $0.77
- $3.85 ÷ 5 = $0.77 per 100 g
4.Oats costs $15.60 for 2 kg. What is the price per 100 g?
Answer: $0.78
- $15.60 ÷ 20 = $0.78 per 100 g
5.Oats costs $3.35 for 500 g. What is the price per 100 g?
Answer: $0.67
- $3.35 ÷ 5 = $0.67 per 100 g
6.Pencils costs $17.76 for a pack of 24. What is the price per pencil?
Answer: $0.74
- $17.76 ÷ 24 = $0.74 per pencil
7.Pasta costs $5.80 for 1 kg. What is the price per 100 g?
Answer: $0.58
- $5.80 ÷ 10 = $0.58 per 100 g
8.Juice costs $7.50 for 1 L. What is the price per 100 mL?
Answer: $0.75
- $7.50 ÷ 10 = $0.75 per 100 mL
Marking tips
- Give credit for correct method even when the final answer slips — the working shows where the thinking went right.
- For open-ended tasks, use the success criteria as a checklist rather than looking for one "right" answer.
- Celebrate what went well first, then pick one thing to work on next.