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

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

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Success TutoringWorksheetsAnswer sheet8th Grade · Mathematics · Ratio & Rates

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

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

1.Which is better value: pencils at $4.86 for a pack of 6, or at $18.24 for a pack of 24?

Answer: $18.24 for a pack of 24 ($0.76 per pencil)

  1. First: $4.86 ÷ 6 = $0.81 per pencil
  2. Second: $18.24 ÷ 24 = $0.76 per pencil
  3. The cheaper unit price is better value.
2.Which is better value: pencils at $4.44 for a pack of 12, or at $9.60 for a pack of 24?

Answer: $4.44 for a pack of 12 ($0.37 per pencil)

  1. First: $4.44 ÷ 12 = $0.37 per pencil
  2. Second: $9.60 ÷ 24 = $0.40 per pencil
  3. The cheaper unit price is better value.
3.Which is better value: juice at $2.70 for 1 L, or at $0.25 for 250 mL?

Answer: $0.25 for 250 mL ($0.10 per 100 mL)

  1. First: $2.70 ÷ 10 = $0.27 per 100 mL
  2. Second: $0.25 ÷ 2.5 = $0.10 per 100 mL
  3. The cheaper unit price is better value.
4.Which is better value: oats at $2.75 for 500 g, or at $11.40 for 2 kg?

Answer: $2.75 for 500 g ($0.55 per 100 g)

  1. First: $2.75 ÷ 5 = $0.55 per 100 g
  2. Second: $11.40 ÷ 20 = $0.57 per 100 g
  3. The cheaper unit price is better value.
5.Which is better value: oats at $0.85 for 500 g, or at $2.90 for 1 kg?

Answer: $0.85 for 500 g ($0.17 per 100 g)

  1. First: $0.85 ÷ 5 = $0.17 per 100 g
  2. Second: $2.90 ÷ 10 = $0.29 per 100 g
  3. The cheaper unit price is better value.
6.Which is better value: pasta at $2.00 for 250 g, or at $3.55 for 500 g?

Answer: $3.55 for 500 g ($0.71 per 100 g)

  1. First: $2.00 ÷ 2.5 = $0.80 per 100 g
  2. Second: $3.55 ÷ 5 = $0.71 per 100 g
  3. The cheaper unit price is better value.
7.Which is better value: rice at $13.80 for 2 kg, or at $7.40 for 1 kg?

Answer: $13.80 for 2 kg ($0.69 per 100 g)

  1. First: $13.80 ÷ 20 = $0.69 per 100 g
  2. Second: $7.40 ÷ 10 = $0.74 per 100 g
  3. The cheaper unit price is better value.
8.Which is better value: oats at $18.00 for 2 kg, or at $4.05 for 500 g?

Answer: $4.05 for 500 g ($0.81 per 100 g)

  1. First: $18.00 ÷ 20 = $0.90 per 100 g
  2. Second: $4.05 ÷ 5 = $0.81 per 100 g
  3. The cheaper unit price is better value.
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