9th Grade Best Buys and Unit Prices Worksheet — Level 1 — Practice Set 4 — 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 4 — Answers
Find the price for the same amount of each (the unit price), then compare. Show your work.
1.Juice costs $1.15 for 250 mL. What is the price per 100 mL?
Answer: $0.46
- $1.15 ÷ 2.5 = $0.46 per 100 mL
2.Pasta costs $6.00 for 1 kg. What is the price per 100 g?
Answer: $0.60
- $6.00 ÷ 10 = $0.60 per 100 g
3.Rice costs $6.80 for 2 kg. What is the price per 100 g?
Answer: $0.34
- $6.80 ÷ 20 = $0.34 per 100 g
4.Juice costs $11.00 for 2 L. What is the price per 100 mL?
Answer: $0.55
- $11.00 ÷ 20 = $0.55 per 100 mL
5.Pasta costs $2.90 for 1 kg. What is the price per 100 g?
Answer: $0.29
- $2.90 ÷ 10 = $0.29 per 100 g
6.Oats costs $2.80 for 500 g. What is the price per 100 g?
Answer: $0.56
- $2.80 ÷ 5 = $0.56 per 100 g
7.Juice costs $2.15 for 250 mL. What is the price per 100 mL?
Answer: $0.86
- $2.15 ÷ 2.5 = $0.86 per 100 mL
8.Rice costs $7.40 for 1 kg. What is the price per 100 g?
Answer: $0.74
- $7.40 ÷ 10 = $0.74 per 100 g
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.