Year 9 Best Buys and Unit Prices Worksheet — Level 1 — Practice Set 4 — Answers
Answer sheet with worked solutions for the Year 9 ratio & rates worksheet.
Success TutoringWorksheetsAnswer sheetYear 9 · Mathematics · Ratio & RatesYear 9 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 working.
1.Juice costs $5.60 for 1 L. What is the price per 100 mL?
Answer: $0.56
- $5.60 ÷ 10 = $0.56 per 100 mL
2.Rice costs $4.35 for 500 g. What is the price per 100 g?
Answer: $0.87
- $4.35 ÷ 5 = $0.87 per 100 g
3.Pasta costs $1.60 for 500 g. What is the price per 100 g?
Answer: $0.32
- $1.60 ÷ 5 = $0.32 per 100 g
4.Rice costs $6.00 for 2 kg. What is the price per 100 g?
Answer: $0.30
- $6.00 ÷ 20 = $0.30 per 100 g
5.Rice costs $10.20 for 2 kg. What is the price per 100 g?
Answer: $0.51
- $10.20 ÷ 20 = $0.51 per 100 g
6.Pencils costs $8.28 for a pack of 12. What is the price per pencil?
Answer: $0.69
- $8.28 ÷ 12 = $0.69 per pencil
7.Pencils costs $6.72 for a pack of 12. What is the price per pencil?
Answer: $0.56
- $6.72 ÷ 12 = $0.56 per pencil
8.Pencils costs $9.84 for a pack of 24. What is the price per pencil?
Answer: $0.41
- $9.84 ÷ 24 = $0.41 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.