8th Grade Best Buys and Unit Prices Worksheet — Level 1 — Answers
Answer sheet with worked solutions for the 8th Grade ratios & rates worksheet.
8th Grade Best Buys and Unit Prices Worksheet — Level 1 — Answers
Find the price for the same amount of each (the unit price), then compare. Show your work.
1.Oats costs $15.40 for 2 kg. What is the price per 100 g?
Answer: $0.77
- $15.40 ÷ 20 = $0.77 per 100 g
2.Pencils costs $3.36 for a pack of 12. What is the price per pencil?
Answer: $0.28
- $3.36 ÷ 12 = $0.28 per pencil
3.Juice costs $17.40 for 2 L. What is the price per 100 mL?
Answer: $0.87
- $17.40 ÷ 20 = $0.87 per 100 mL
4.Rice costs $13.40 for 2 kg. What is the price per 100 g?
Answer: $0.67
- $13.40 ÷ 20 = $0.67 per 100 g
5.Rice costs $3.95 for 500 g. What is the price per 100 g?
Answer: $0.79
- $3.95 ÷ 5 = $0.79 per 100 g
6.Pasta costs $1.20 for 250 g. What is the price per 100 g?
Answer: $0.48
- $1.20 ÷ 2.5 = $0.48 per 100 g
7.Rice costs $3.50 for 500 g. What is the price per 100 g?
Answer: $0.70
- $3.50 ÷ 5 = $0.70 per 100 g
8.Juice costs $7.00 for 2 L. What is the price per 100 mL?
Answer: $0.35
- $7.00 ÷ 20 = $0.35 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.