Year 7 Best Buys and Unit Prices Worksheet — Level 1 — Practice Set 4 — Answers
Answer sheet with worked solutions for the Year 7 ratio & rates worksheet.
Year 7 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.Oats costs $10.80 for 2 kg. What is the price per 100 g?
Answer: $0.54
- $10.80 ÷ 20 = $0.54 per 100 g
2.Pencils costs $7.92 for a pack of 24. What is the price per pencil?
Answer: $0.33
- $7.92 ÷ 24 = $0.33 per pencil
3.Rice costs $17.40 for 2 kg. What is the price per 100 g?
Answer: $0.87
- $17.40 ÷ 20 = $0.87 per 100 g
4.Juice costs $1.30 for 250 mL. What is the price per 100 mL?
Answer: $0.52
- $1.30 ÷ 2.5 = $0.52 per 100 mL
5.Pencils costs $10.68 for a pack of 12. What is the price per pencil?
Answer: $0.89
- $10.68 ÷ 12 = $0.89 per pencil
6.Oats costs $5.10 for 1 kg. What is the price per 100 g?
Answer: $0.51
- $5.10 ÷ 10 = $0.51 per 100 g
7.Pasta costs $2.00 for 1 kg. What is the price per 100 g?
Answer: $0.20
- $2.00 ÷ 10 = $0.20 per 100 g
8.Pasta 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.
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