Success TutoringWorksheets

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

Answer sheet with worked solutions for the 8th Grade ratios & rates worksheet.

Download answers PDFPrint answersBack to worksheet
Success TutoringWorksheetsAnswer sheet8th Grade · Mathematics · Ratio & Rates

8th Grade 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 work.

1.Which is better value: pasta at $4.05 for 500 g, or at $7.80 for 1 kg?

Answer: $7.80 for 1 kg ($0.78 per 100 g)

  1. First: $4.05 ÷ 5 = $0.81 per 100 g
  2. Second: $7.80 ÷ 10 = $0.78 per 100 g
  3. The cheaper unit price is better value.
2.Which is better value: pencils at $7.68 for a pack of 12, or at $3.54 for a pack of 6?

Answer: $3.54 for a pack of 6 ($0.59 per pencil)

  1. First: $7.68 ÷ 12 = $0.64 per pencil
  2. Second: $3.54 ÷ 6 = $0.59 per pencil
  3. The cheaper unit price is better value.
3.Which is better value: rice at $5.60 for 1 kg, or at $2.50 for 500 g?

Answer: $2.50 for 500 g ($0.50 per 100 g)

  1. First: $5.60 ÷ 10 = $0.56 per 100 g
  2. Second: $2.50 ÷ 5 = $0.50 per 100 g
  3. The cheaper unit price is better value.
4.Which is better value: pencils at $14.64 for a pack of 24, or at $4.56 for a pack of 6?

Answer: $14.64 for a pack of 24 ($0.61 per pencil)

  1. First: $14.64 ÷ 24 = $0.61 per pencil
  2. Second: $4.56 ÷ 6 = $0.76 per pencil
  3. The cheaper unit price is better value.
5.Which is better value: rice at $2.45 for 500 g, or at $11.20 for 2 kg?

Answer: $2.45 for 500 g ($0.49 per 100 g)

  1. First: $2.45 ÷ 5 = $0.49 per 100 g
  2. Second: $11.20 ÷ 20 = $0.56 per 100 g
  3. The cheaper unit price is better value.
6.Which is better value: pencils at $4.08 for a pack of 12, or at $2.76 for a pack of 6?

Answer: $4.08 for a pack of 12 ($0.34 per pencil)

  1. First: $4.08 ÷ 12 = $0.34 per pencil
  2. Second: $2.76 ÷ 6 = $0.46 per pencil
  3. The cheaper unit price is better value.
7.Which is better value: pencils at $8.16 for a pack of 24, or at $2.04 for a pack of 12?

Answer: $2.04 for a pack of 12 ($0.17 per pencil)

  1. First: $8.16 ÷ 24 = $0.34 per pencil
  2. Second: $2.04 ÷ 12 = $0.17 per pencil
  3. The cheaper unit price is better value.
8.Which is better value: pasta at $2.80 for 500 g, or at $5.20 for 1 kg?

Answer: $5.20 for 1 kg ($0.52 per 100 g)

  1. First: $2.80 ÷ 5 = $0.56 per 100 g
  2. Second: $5.20 ÷ 10 = $0.52 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: