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8th Grade Best Buys and Unit Prices Worksheet — Level 3 — Practice Set 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 — Practice Set 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 $5.52 for a pack of 24, or at $1.98 for a pack of 6?

Answer: $5.52 for a pack of 24 ($0.23 per pencil)

  1. First: $5.52 ÷ 24 = $0.23 per pencil
  2. Second: $1.98 ÷ 6 = $0.33 per pencil
  3. The cheaper unit price is better value.
2.Which is better value: pencils at $5.10 for a pack of 6, or at $8.16 for a pack of 12?

Answer: $8.16 for a pack of 12 ($0.68 per pencil)

  1. First: $5.10 ÷ 6 = $0.85 per pencil
  2. Second: $8.16 ÷ 12 = $0.68 per pencil
  3. The cheaper unit price is better value.
3.Which is better value: rice at $2.60 for 1 kg, or at $7.80 for 2 kg?

Answer: $2.60 for 1 kg ($0.26 per 100 g)

  1. First: $2.60 ÷ 10 = $0.26 per 100 g
  2. Second: $7.80 ÷ 20 = $0.39 per 100 g
  3. The cheaper unit price is better value.
4.Which is better value: oats at $2.15 for 500 g, or at $5.70 for 1 kg?

Answer: $2.15 for 500 g ($0.43 per 100 g)

  1. First: $2.15 ÷ 5 = $0.43 per 100 g
  2. Second: $5.70 ÷ 10 = $0.57 per 100 g
  3. The cheaper unit price is better value.
5.Which is better value: pasta at $3.10 for 1 kg, or at $2.30 for 500 g?

Answer: $3.10 for 1 kg ($0.31 per 100 g)

  1. First: $3.10 ÷ 10 = $0.31 per 100 g
  2. Second: $2.30 ÷ 5 = $0.46 per 100 g
  3. The cheaper unit price is better value.
6.Which is better value: juice at $1.20 for 250 mL, or at $5.90 for 1 L?

Answer: $1.20 for 250 mL ($0.48 per 100 mL)

  1. First: $1.20 ÷ 2.5 = $0.48 per 100 mL
  2. Second: $5.90 ÷ 10 = $0.59 per 100 mL
  3. The cheaper unit price is better value.
7.Which is better value: rice at $1.90 for 500 g, or at $4.80 for 2 kg?

Answer: $4.80 for 2 kg ($0.24 per 100 g)

  1. First: $1.90 ÷ 5 = $0.38 per 100 g
  2. Second: $4.80 ÷ 20 = $0.24 per 100 g
  3. The cheaper unit price is better value.
8.Which is better value: juice at $17.00 for 2 L, or at $9.80 for 1 L?

Answer: $17.00 for 2 L ($0.85 per 100 mL)

  1. First: $17.00 ÷ 20 = $0.85 per 100 mL
  2. Second: $9.80 ÷ 10 = $0.98 per 100 mL
  3. The cheaper unit price is better value.
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