Year 8 Best Buys and Unit Prices Worksheet — Level 1 — Practice Set 3 — 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 3 — Answers
Find the price for the same amount of each (the unit price), then compare. Show your working.
1.Juice costs $5.00 for 2 L. What is the price per 100 mL?
Answer: $0.25
- $5.00 ÷ 20 = $0.25 per 100 mL
2.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
3.Juice costs $2.70 for 1 L. What is the price per 100 mL?
Answer: $0.27
- $2.70 ÷ 10 = $0.27 per 100 mL
4.Juice costs $5.60 for 2 L. What is the price per 100 mL?
Answer: $0.28
- $5.60 ÷ 20 = $0.28 per 100 mL
5.Pencils costs $2.64 for a pack of 12. What is the price per pencil?
Answer: $0.22
- $2.64 ÷ 12 = $0.22 per pencil
6.Oats costs $9.80 for 2 kg. What is the price per 100 g?
Answer: $0.49
- $9.80 ÷ 20 = $0.49 per 100 g
7.Pasta costs $1.95 for 250 g. What is the price per 100 g?
Answer: $0.78
- $1.95 ÷ 2.5 = $0.78 per 100 g
8.Pencils costs $1.98 for a pack of 6. What is the price per pencil?
Answer: $0.33
- $1.98 ÷ 6 = $0.33 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.