9th Grade Best Buys and Unit Prices Worksheet — Level 1 — Practice Set 2 — Answers
Answer sheet with worked solutions for the 9th Grade ratios & rates worksheet.
9th Grade Best Buys and Unit Prices Worksheet — Level 1 — Practice Set 2 — Answers
Find the price for the same amount of each (the unit price), then compare. Show your work.
1.Oats costs $4.25 for 500 g. What is the price per 100 g?
Answer: $0.85
- $4.25 ÷ 5 = $0.85 per 100 g
2.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
3.Rice costs $17.40 for 2 kg. What is the price per 100 g?
Answer: $0.87
- $17.40 ÷ 20 = $0.87 per 100 g
4.Pasta costs $6.40 for 1 kg. What is the price per 100 g?
Answer: $0.64
- $6.40 ÷ 10 = $0.64 per 100 g
5.Juice costs $9.60 for 2 L. What is the price per 100 mL?
Answer: $0.48
- $9.60 ÷ 20 = $0.48 per 100 mL
6.Oats costs $1.05 for 500 g. What is the price per 100 g?
Answer: $0.21
- $1.05 ÷ 5 = $0.21 per 100 g
7.Oats costs $5.60 for 1 kg. What is the price per 100 g?
Answer: $0.56
- $5.60 ÷ 10 = $0.56 per 100 g
8.Juice costs $0.95 for 250 mL. What is the price per 100 mL?
Answer: $0.38
- $0.95 ÷ 2.5 = $0.38 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.