Year 8 Best Buys and Unit Prices Worksheet — Level 1 — Practice Set 2 — Answers
Answer sheet with worked solutions for the Year 8 ratio & rates worksheet.
Year 8 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 working.
1.Rice costs $11.20 for 2 kg. What is the price per 100 g?
Answer: $0.56
- $11.20 ÷ 20 = $0.56 per 100 g
2.Juice costs $8.00 for 2 L. What is the price per 100 mL?
Answer: $0.40
- $8.00 ÷ 20 = $0.40 per 100 mL
3.Rice costs $8.50 for 1 kg. What is the price per 100 g?
Answer: $0.85
- $8.50 ÷ 10 = $0.85 per 100 g
4.Pencils costs $15.12 for a pack of 24. What is the price per pencil?
Answer: $0.63
- $15.12 ÷ 24 = $0.63 per pencil
5.Rice costs $6.30 for 1 kg. What is the price per 100 g?
Answer: $0.63
- $6.30 ÷ 10 = $0.63 per 100 g
6.Oats costs $17.40 for 2 kg. What is the price per 100 g?
Answer: $0.87
- $17.40 ÷ 20 = $0.87 per 100 g
7.Juice costs $3.20 for 1 L. What is the price per 100 mL?
Answer: $0.32
- $3.20 ÷ 10 = $0.32 per 100 mL
8.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
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.