8th Grade Best Buys and Unit Prices Worksheet — Level 1 — Practice Set 4 — 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 4 — Answers
Find the price for the same amount of each (the unit price), then compare. Show your work.
1.Oats costs $4.05 for 500 g. What is the price per 100 g?
Answer: $0.81
- $4.05 ÷ 5 = $0.81 per 100 g
2.Oats costs $14.00 for 2 kg. What is the price per 100 g?
Answer: $0.70
- $14.00 ÷ 20 = $0.70 per 100 g
3.Pencils costs $2.58 for a pack of 6. What is the price per pencil?
Answer: $0.43
- $2.58 ÷ 6 = $0.43 per pencil
4.Rice costs $8.60 for 1 kg. What is the price per 100 g?
Answer: $0.86
- $8.60 ÷ 10 = $0.86 per 100 g
5.Juice costs $0.80 for 250 mL. What is the price per 100 mL?
Answer: $0.32
- $0.80 ÷ 2.5 = $0.32 per 100 mL
6.Rice costs $17.20 for 2 kg. What is the price per 100 g?
Answer: $0.86
- $17.20 ÷ 20 = $0.86 per 100 g
7.Oats costs $7.40 for 1 kg. What is the price per 100 g?
Answer: $0.74
- $7.40 ÷ 10 = $0.74 per 100 g
8.Rice costs $1.60 for 500 g. What is the price per 100 g?
Answer: $0.32
- $1.60 ÷ 5 = $0.32 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.