Year 7 Best Buys and Unit Prices Worksheet — Level 2 — Answers
Answer sheet with worked solutions for the Year 7 ratio & rates worksheet.
Success TutoringWorksheetsAnswer sheetYear 7 · Mathematics · Ratio & RatesYear 7 Best Buys and Unit Prices Worksheet — Level 2 — Answers
Find the price for the same amount of each (the unit price), then compare. Show your working.
1.Which is better value: pencils at $3.24 for a pack of 6, or at $8.88 for a pack of 12?
Answer: $3.24 for a pack of 6 ($0.54 per pencil)
- First: $3.24 ÷ 6 = $0.54 per pencil
- Second: $8.88 ÷ 12 = $0.74 per pencil
- The cheaper unit price is better value.
2.Which is better value: pencils at $2.28 for a pack of 12, or at $6.96 for a pack of 24?
Answer: $2.28 for a pack of 12 ($0.19 per pencil)
- First: $2.28 ÷ 12 = $0.19 per pencil
- Second: $6.96 ÷ 24 = $0.29 per pencil
- The cheaper unit price is better value.
3.Which is better value: pencils at $4.50 for a pack of 6, or at $20.88 for a pack of 24?
Answer: $4.50 for a pack of 6 ($0.75 per pencil)
- First: $4.50 ÷ 6 = $0.75 per pencil
- Second: $20.88 ÷ 24 = $0.87 per pencil
- The cheaper unit price is better value.
4.Which is better value: juice at $2.20 for 1 L, or at $7.40 for 2 L?
Answer: $2.20 for 1 L ($0.22 per 100 mL)
- First: $2.20 ÷ 10 = $0.22 per 100 mL
- Second: $7.40 ÷ 20 = $0.37 per 100 mL
- The cheaper unit price is better value.
5.Which is better value: oats at $7.30 for 1 kg, or at $16.40 for 2 kg?
Answer: $7.30 for 1 kg ($0.73 per 100 g)
- First: $7.30 ÷ 10 = $0.73 per 100 g
- Second: $16.40 ÷ 20 = $0.82 per 100 g
- The cheaper unit price is better value.
6.Which is better value: rice at $8.60 for 2 kg, or at $1.75 for 500 g?
Answer: $1.75 for 500 g ($0.35 per 100 g)
- First: $8.60 ÷ 20 = $0.43 per 100 g
- Second: $1.75 ÷ 5 = $0.35 per 100 g
- The cheaper unit price is better value.
7.Which is better value: rice at $2.85 for 500 g, or at $4.40 for 1 kg?
Answer: $4.40 for 1 kg ($0.44 per 100 g)
- First: $2.85 ÷ 5 = $0.57 per 100 g
- Second: $4.40 ÷ 10 = $0.44 per 100 g
- The cheaper unit price is better value.
8.Which is better value: pencils at $4.26 for a pack of 6, or at $9.12 for a pack of 12?
Answer: $4.26 for a pack of 6 ($0.71 per pencil)
- First: $4.26 ÷ 6 = $0.71 per pencil
- Second: $9.12 ÷ 12 = $0.76 per pencil
- The cheaper unit price is better value.
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.
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