Success TutoringWorksheets

Year 8 Best Buys and Unit Prices Worksheet — Level 2 — Practice Set 4 — 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 2 — Practice Set 4 — Answers

Find the price for the same amount of each (the unit price), then compare. Show your working.

1.Which is better value: juice at $3.80 for 2 L, or at $0.60 for 250 mL?

Answer: $3.80 for 2 L ($0.19 per 100 mL)

  1. First: $3.80 ÷ 20 = $0.19 per 100 mL
  2. Second: $0.60 ÷ 2.5 = $0.24 per 100 mL
  3. The cheaper unit price is better value.
2.Which is better value: rice at $5.50 for 1 kg, or at $1.85 for 500 g?

Answer: $1.85 for 500 g ($0.37 per 100 g)

  1. First: $5.50 ÷ 10 = $0.55 per 100 g
  2. Second: $1.85 ÷ 5 = $0.37 per 100 g
  3. The cheaper unit price is better value.
3.Which is better value: pasta at $2.00 for 1 kg, or at $1.50 for 500 g?

Answer: $2.00 for 1 kg ($0.20 per 100 g)

  1. First: $2.00 ÷ 10 = $0.20 per 100 g
  2. Second: $1.50 ÷ 5 = $0.30 per 100 g
  3. The cheaper unit price is better value.
4.Which is better value: pasta at $7.30 for 1 kg, or at $1.40 for 250 g?

Answer: $1.40 for 250 g ($0.56 per 100 g)

  1. First: $7.30 ÷ 10 = $0.73 per 100 g
  2. Second: $1.40 ÷ 2.5 = $0.56 per 100 g
  3. The cheaper unit price is better value.
5.Which is better value: oats at $3.30 for 1 kg, or at $4.20 for 2 kg?

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

  1. First: $3.30 ÷ 10 = $0.33 per 100 g
  2. Second: $4.20 ÷ 20 = $0.21 per 100 g
  3. The cheaper unit price is better value.
6.Which is better value: pencils at $9.84 for a pack of 24, or at $2.82 for a pack of 6?

Answer: $9.84 for a pack of 24 ($0.41 per pencil)

  1. First: $9.84 ÷ 24 = $0.41 per pencil
  2. Second: $2.82 ÷ 6 = $0.47 per pencil
  3. The cheaper unit price is better value.
7.Which is better value: rice at $5.80 for 1 kg, or at $13.40 for 2 kg?

Answer: $5.80 for 1 kg ($0.58 per 100 g)

  1. First: $5.80 ÷ 10 = $0.58 per 100 g
  2. Second: $13.40 ÷ 20 = $0.67 per 100 g
  3. The cheaper unit price is better value.
8.Which is better value: oats at $8.20 for 1 kg, or at $3.80 for 500 g?

Answer: $3.80 for 500 g ($0.76 per 100 g)

  1. First: $8.20 ÷ 10 = $0.82 per 100 g
  2. Second: $3.80 ÷ 5 = $0.76 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: