7th Grade Best Buys and Unit Prices Worksheet — Level 1 — Practice Set 4 — Answers
Answer sheet with worked solutions for the 7th Grade ratios & rates worksheet.
7th 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 $0.70 for 250 mL. What is the price per 100 mL?
Answer: $0.28
- $0.70 ÷ 2.5 = $0.28 per 100 mL
2.Oats costs $2.25 for 500 g. What is the price per 100 g?
Answer: $0.45
- $2.25 ÷ 5 = $0.45 per 100 g
3.Oats costs $6.40 for 2 kg. What is the price per 100 g?
Answer: $0.32
- $6.40 ÷ 20 = $0.32 per 100 g
4.Pasta costs $4.35 for 500 g. What is the price per 100 g?
Answer: $0.87
- $4.35 ÷ 5 = $0.87 per 100 g
5.Pencils costs $4.56 for a pack of 6. What is the price per pencil?
Answer: $0.76
- $4.56 ÷ 6 = $0.76 per pencil
6.Juice costs $8.10 for 1 L. What is the price per 100 mL?
Answer: $0.81
- $8.10 ÷ 10 = $0.81 per 100 mL
7.Rice costs $3.00 for 500 g. What is the price per 100 g?
Answer: $0.60
- $3.00 ÷ 5 = $0.60 per 100 g
8.Rice costs $4.25 for 500 g. What is the price per 100 g?
Answer: $0.85
- $4.25 ÷ 5 = $0.85 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.