Year 9 Best Buys and Unit Prices Worksheet — Level 1 — Practice Set 2 — Answers
Answer sheet with worked solutions for the Year 9 ratio & rates worksheet.
Year 9 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.Pasta costs $1.15 for 250 g. What is the price per 100 g?
Answer: $0.46
- $1.15 ÷ 2.5 = $0.46 per 100 g
2.Pencils costs $3.66 for a pack of 6. What is the price per pencil?
Answer: $0.61
- $3.66 ÷ 6 = $0.61 per pencil
3.Rice costs $1.35 for 500 g. What is the price per 100 g?
Answer: $0.27
- $1.35 ÷ 5 = $0.27 per 100 g
4.Oats costs $4.90 for 1 kg. What is the price per 100 g?
Answer: $0.49
- $4.90 ÷ 10 = $0.49 per 100 g
5.Rice costs $2.35 for 500 g. What is the price per 100 g?
Answer: $0.47
- $2.35 ÷ 5 = $0.47 per 100 g
6.Oats costs $2.90 for 500 g. What is the price per 100 g?
Answer: $0.58
- $2.90 ÷ 5 = $0.58 per 100 g
7.Pasta costs $7.60 for 1 kg. What is the price per 100 g?
Answer: $0.76
- $7.60 ÷ 10 = $0.76 per 100 g
8.Oats costs $3.90 for 1 kg. What is the price per 100 g?
Answer: $0.39
- $3.90 ÷ 10 = $0.39 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.