Year 10 Best Buys and Unit Prices Worksheet — Level 1 — Practice Set 3 — Answers
Answer sheet with worked solutions for the Year 10 ratio & rates worksheet.
Success TutoringWorksheetsAnswer sheetYear 10 · Mathematics · Ratio & RatesYear 10 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.Pasta costs $6.70 for 1 kg. What is the price per 100 g?
Answer: $0.67
- $6.70 ÷ 10 = $0.67 per 100 g
2.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
3.Oats costs $8.40 for 1 kg. What is the price per 100 g?
Answer: $0.84
- $8.40 ÷ 10 = $0.84 per 100 g
4.Oats costs $2.80 for 1 kg. What is the price per 100 g?
Answer: $0.28
- $2.80 ÷ 10 = $0.28 per 100 g
5.Pencils costs $5.28 for a pack of 6. What is the price per pencil?
Answer: $0.88
- $5.28 ÷ 6 = $0.88 per pencil
6.Juice costs $2.00 for 1 L. What is the price per 100 mL?
Answer: $0.20
- $2.00 ÷ 10 = $0.20 per 100 mL
7.Pasta costs $0.90 for 250 g. What is the price per 100 g?
Answer: $0.36
- $0.90 ÷ 2.5 = $0.36 per 100 g
8.Rice costs $3.20 for 500 g. What is the price per 100 g?
Answer: $0.64
- $3.20 ÷ 5 = $0.64 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.