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8th Grade Best Buys and Unit Prices Worksheet — Level 3 — Practice Set 4 — 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 — Practice Set 4 — 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 $5.40 for a pack of 12, or at $12.24 for a pack of 24?

Answer: $5.40 for a pack of 12 ($0.45 per pencil)

  1. First: $5.40 ÷ 12 = $0.45 per pencil
  2. Second: $12.24 ÷ 24 = $0.51 per pencil
  3. The cheaper unit price is better value.
2.Which is better value: pencils at $3.66 for a pack of 6, or at $13.20 for a pack of 24?

Answer: $13.20 for a pack of 24 ($0.55 per pencil)

  1. First: $3.66 ÷ 6 = $0.61 per pencil
  2. Second: $13.20 ÷ 24 = $0.55 per pencil
  3. The cheaper unit price is better value.
3.Which is better value: rice at $7.90 for 1 kg, or at $3.80 for 500 g?

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

  1. First: $7.90 ÷ 10 = $0.79 per 100 g
  2. Second: $3.80 ÷ 5 = $0.76 per 100 g
  3. The cheaper unit price is better value.
4.Which is better value: rice at $6.10 for 1 kg, or at $2.50 for 500 g?

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

  1. First: $6.10 ÷ 10 = $0.61 per 100 g
  2. Second: $2.50 ÷ 5 = $0.50 per 100 g
  3. The cheaper unit price is better value.
5.Which is better value: rice at $2.00 for 500 g, or at $5.60 for 1 kg?

Answer: $2.00 for 500 g ($0.40 per 100 g)

  1. First: $2.00 ÷ 5 = $0.40 per 100 g
  2. Second: $5.60 ÷ 10 = $0.56 per 100 g
  3. The cheaper unit price is better value.
6.Which is better value: pencils at $0.90 for a pack of 6, or at $2.28 for a pack of 12?

Answer: $0.90 for a pack of 6 ($0.15 per pencil)

  1. First: $0.90 ÷ 6 = $0.15 per pencil
  2. Second: $2.28 ÷ 12 = $0.19 per pencil
  3. The cheaper unit price is better value.
7.Which is better value: oats at $3.20 for 1 kg, or at $1.20 for 500 g?

Answer: $1.20 for 500 g ($0.24 per 100 g)

  1. First: $3.20 ÷ 10 = $0.32 per 100 g
  2. Second: $1.20 ÷ 5 = $0.24 per 100 g
  3. The cheaper unit price is better value.
8.Which is better value: pencils at $20.64 for a pack of 24, or at $6.06 for a pack of 6?

Answer: $20.64 for a pack of 24 ($0.86 per pencil)

  1. First: $20.64 ÷ 24 = $0.86 per pencil
  2. Second: $6.06 ÷ 6 = $1.01 per pencil
  3. The cheaper unit price is better value.
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