Year 9 Best Buys and Unit Prices Worksheet — Level 1 — Answers
Answer sheet with worked solutions for the Year 9 ratio & rates worksheet.
Year 9 Best Buys and Unit Prices Worksheet — Level 1 — Answers
Find the price for the same amount of each (the unit price), then compare. Show your working.
1.Pasta costs $1.80 for 500 g. What is the price per 100 g?
Answer: $0.36
- $1.80 ÷ 5 = $0.36 per 100 g
2.Rice costs $1.25 for 500 g. What is the price per 100 g?
Answer: $0.25
- $1.25 ÷ 5 = $0.25 per 100 g
3.Pencils costs $4.86 for a pack of 6. What is the price per pencil?
Answer: $0.81
- $4.86 ÷ 6 = $0.81 per pencil
4.Rice costs $10.00 for 2 kg. What is the price per 100 g?
Answer: $0.50
- $10.00 ÷ 20 = $0.50 per 100 g
5.Oats costs $13.60 for 2 kg. What is the price per 100 g?
Answer: $0.68
- $13.60 ÷ 20 = $0.68 per 100 g
6.Pencils costs $16.80 for a pack of 24. What is the price per pencil?
Answer: $0.70
- $16.80 ÷ 24 = $0.70 per pencil
7.Pencils costs $3.12 for a pack of 6. What is the price per pencil?
Answer: $0.52
- $3.12 ÷ 6 = $0.52 per pencil
8.Juice costs $7.00 for 1 L. What is the price per 100 mL?
Answer: $0.70
- $7.00 ÷ 10 = $0.70 per 100 mL
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.