Year 7 Best Buys and Unit Prices Worksheet — Level 1 — Practice Set 2 — 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 2 — Answers
Find the price for the same amount of each (the unit price), then compare. Show your working.
1.Rice costs $4.00 for 500 g. What is the price per 100 g?
Answer: $0.80
- $4.00 ÷ 5 = $0.80 per 100 g
2.Oats costs $7.40 for 2 kg. What is the price per 100 g?
Answer: $0.37
- $7.40 ÷ 20 = $0.37 per 100 g
3.Pencils costs $8.40 for a pack of 24. What is the price per pencil?
Answer: $0.35
- $8.40 ÷ 24 = $0.35 per pencil
4.Oats costs $2.65 for 500 g. What is the price per 100 g?
Answer: $0.53
- $2.65 ÷ 5 = $0.53 per 100 g
5.Rice costs $8.60 for 2 kg. What is the price per 100 g?
Answer: $0.43
- $8.60 ÷ 20 = $0.43 per 100 g
6.Pasta costs $2.10 for 1 kg. What is the price per 100 g?
Answer: $0.21
- $2.10 ÷ 10 = $0.21 per 100 g
7.Juice costs $5.00 for 1 L. What is the price per 100 mL?
Answer: $0.50
- $5.00 ÷ 10 = $0.50 per 100 mL
8.Oats costs $3.80 for 500 g. What is the price per 100 g?
Answer: $0.76
- $3.80 ÷ 5 = $0.76 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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