Success TutoringWorksheets

Year 8 Best Buys and Unit Prices Worksheet — Level 3 — Practice Set 2 — Answers

Answer sheet with worked solutions for the Year 8 ratio & rates worksheet.

Download answers PDFPrint answersBack to worksheet
Success TutoringWorksheetsAnswer sheetYear 8 · Mathematics · Ratio & Rates

Year 8 Best Buys and Unit Prices Worksheet — Level 3 — Practice Set 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 $2.52 for a pack of 12, or at $9.60 for a pack of 24?

Answer: $2.52 for a pack of 12 ($0.21 per pencil)

  1. First: $2.52 ÷ 12 = $0.21 per pencil
  2. Second: $9.60 ÷ 24 = $0.40 per pencil
  3. The cheaper unit price is better value.
2.Which is better value: pencils at $4.68 for a pack of 6, or at $23.28 for a pack of 24?

Answer: $4.68 for a pack of 6 ($0.78 per pencil)

  1. First: $4.68 ÷ 6 = $0.78 per pencil
  2. Second: $23.28 ÷ 24 = $0.97 per pencil
  3. The cheaper unit price is better value.
3.Which is better value: rice at $2.15 for 500 g, or at $4.10 for 1 kg?

Answer: $4.10 for 1 kg ($0.41 per 100 g)

  1. First: $2.15 ÷ 5 = $0.43 per 100 g
  2. Second: $4.10 ÷ 10 = $0.41 per 100 g
  3. The cheaper unit price is better value.
4.Which is better value: rice at $13.20 for 2 kg, or at $2.85 for 500 g?

Answer: $2.85 for 500 g ($0.57 per 100 g)

  1. First: $13.20 ÷ 20 = $0.66 per 100 g
  2. Second: $2.85 ÷ 5 = $0.57 per 100 g
  3. The cheaper unit price is better value.
5.Which is better value: rice at $0.90 for 500 g, or at $2.80 for 1 kg?

Answer: $0.90 for 500 g ($0.18 per 100 g)

  1. First: $0.90 ÷ 5 = $0.18 per 100 g
  2. Second: $2.80 ÷ 10 = $0.28 per 100 g
  3. The cheaper unit price is better value.
6.Which is better value: rice at $1.70 for 500 g, or at $5.60 for 2 kg?

Answer: $5.60 for 2 kg ($0.28 per 100 g)

  1. First: $1.70 ÷ 5 = $0.34 per 100 g
  2. Second: $5.60 ÷ 20 = $0.28 per 100 g
  3. The cheaper unit price is better value.
7.Which is better value: rice at $1.90 for 500 g, or at $4.20 for 2 kg?

Answer: $4.20 for 2 kg ($0.21 per 100 g)

  1. First: $1.90 ÷ 5 = $0.38 per 100 g
  2. Second: $4.20 ÷ 20 = $0.21 per 100 g
  3. The cheaper unit price is better value.
8.Which is better value: rice at $9.80 for 2 kg, or at $1.70 for 500 g?

Answer: $1.70 for 500 g ($0.34 per 100 g)

  1. First: $9.80 ÷ 20 = $0.49 per 100 g
  2. Second: $1.70 ÷ 5 = $0.34 per 100 g
  3. The cheaper unit price is better value.
Free worksheets at worksheets.successtutoring.com · © Success Tutoring · Free for personal and classroom use

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.

Great work. Here's what to try next: