Success TutoringWorksheets

Year 7 Best Buys and Unit Prices Worksheet — Level 3 — Practice Set 2 — Answers

Answer sheet with worked solutions for the Year 7 ratio & rates worksheet.

Download answers PDFPrint answersBack to worksheet
Success TutoringWorksheetsAnswer sheetYear 7 · Mathematics · Ratio & Rates

Year 7 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 $2.16 for a pack of 6, or at $7.20 for a pack of 24?

Answer: $7.20 for a pack of 24 ($0.30 per pencil)

  1. First: $2.16 ÷ 6 = $0.36 per pencil
  2. Second: $7.20 ÷ 24 = $0.30 per pencil
  3. The cheaper unit price is better value.
2.Which is better value: rice at $2.85 for 500 g, or at $15.00 for 2 kg?

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

  1. First: $2.85 ÷ 5 = $0.57 per 100 g
  2. Second: $15.00 ÷ 20 = $0.75 per 100 g
  3. The cheaper unit price is better value.
3.Which is better value: juice at $0.55 for 250 mL, or at $1.90 for 1 L?

Answer: $1.90 for 1 L ($0.19 per 100 mL)

  1. First: $0.55 ÷ 2.5 = $0.22 per 100 mL
  2. Second: $1.90 ÷ 10 = $0.19 per 100 mL
  3. The cheaper unit price is better value.
4.Which is better value: rice at $5.50 for 1 kg, or at $10.20 for 2 kg?

Answer: $10.20 for 2 kg ($0.51 per 100 g)

  1. First: $5.50 ÷ 10 = $0.55 per 100 g
  2. Second: $10.20 ÷ 20 = $0.51 per 100 g
  3. The cheaper unit price is better value.
5.Which is better value: pencils at $12.72 for a pack of 24, or at $2.58 for a pack of 6?

Answer: $2.58 for a pack of 6 ($0.43 per pencil)

  1. First: $12.72 ÷ 24 = $0.53 per pencil
  2. Second: $2.58 ÷ 6 = $0.43 per pencil
  3. The cheaper unit price is better value.
6.Which is better value: pasta at $7.90 for 1 kg, or at $3.00 for 500 g?

Answer: $3.00 for 500 g ($0.60 per 100 g)

  1. First: $7.90 ÷ 10 = $0.79 per 100 g
  2. Second: $3.00 ÷ 5 = $0.60 per 100 g
  3. The cheaper unit price is better value.
7.Which is better value: oats at $7.80 for 1 kg, or at $2.90 for 500 g?

Answer: $2.90 for 500 g ($0.58 per 100 g)

  1. First: $7.80 ÷ 10 = $0.78 per 100 g
  2. Second: $2.90 ÷ 5 = $0.58 per 100 g
  3. The cheaper unit price is better value.
8.Which is better value: oats at $12.00 for 2 kg, or at $3.25 for 500 g?

Answer: $12.00 for 2 kg ($0.60 per 100 g)

  1. First: $12.00 ÷ 20 = $0.60 per 100 g
  2. Second: $3.25 ÷ 5 = $0.65 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: