Year 9 Best Buys and Unit Prices Worksheet — Level 1 — Practice Set 3 — 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 3 — Answers
Find the price for the same amount of each (the unit price), then compare. Show your working.
1.Rice costs $12.60 for 2 kg. What is the price per 100 g?
Answer: $0.63
- $12.60 ÷ 20 = $0.63 per 100 g
2.Juice costs $12.60 for 2 L. What is the price per 100 mL?
Answer: $0.63
- $12.60 ÷ 20 = $0.63 per 100 mL
3.Pencils costs $20.40 for a pack of 24. What is the price per pencil?
Answer: $0.85
- $20.40 ÷ 24 = $0.85 per pencil
4.Rice costs $15.00 for 2 kg. What is the price per 100 g?
Answer: $0.75
- $15.00 ÷ 20 = $0.75 per 100 g
5.Pasta costs $4.15 for 500 g. What is the price per 100 g?
Answer: $0.83
- $4.15 ÷ 5 = $0.83 per 100 g
6.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
7.Pasta 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.Oats costs $2.30 for 1 kg. What is the price per 100 g?
Answer: $0.23
- $2.30 ÷ 10 = $0.23 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.