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7th Grade Best Buys and Unit Prices Worksheet — Level 2 — Practice Set 4 — Answers

Answer sheet with worked solutions for the 7th Grade ratios & rates worksheet.

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Success TutoringWorksheetsAnswer sheet7th Grade · Mathematics · Ratio & Rates

7th Grade Best Buys and Unit Prices Worksheet — Level 2 — 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: pasta at $3.00 for 500 g, or at $1.25 for 250 g?

Answer: $1.25 for 250 g ($0.50 per 100 g)

  1. First: $3.00 ÷ 5 = $0.60 per 100 g
  2. Second: $1.25 ÷ 2.5 = $0.50 per 100 g
  3. The cheaper unit price is better value.
2.Which is better value: rice at $2.70 for 1 kg, or at $2.15 for 500 g?

Answer: $2.70 for 1 kg ($0.27 per 100 g)

  1. First: $2.70 ÷ 10 = $0.27 per 100 g
  2. Second: $2.15 ÷ 5 = $0.43 per 100 g
  3. The cheaper unit price is better value.
3.Which is better value: juice at $3.40 for 1 L, or at $1.00 for 250 mL?

Answer: $3.40 for 1 L ($0.34 per 100 mL)

  1. First: $3.40 ÷ 10 = $0.34 per 100 mL
  2. Second: $1.00 ÷ 2.5 = $0.40 per 100 mL
  3. The cheaper unit price is better value.
4.Which is better value: oats at $15.20 for 2 kg, or at $3.50 for 500 g?

Answer: $3.50 for 500 g ($0.70 per 100 g)

  1. First: $15.20 ÷ 20 = $0.76 per 100 g
  2. Second: $3.50 ÷ 5 = $0.70 per 100 g
  3. The cheaper unit price is better value.
5.Which is better value: pasta at $6.20 for 1 kg, or at $1.20 for 250 g?

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

  1. First: $6.20 ÷ 10 = $0.62 per 100 g
  2. Second: $1.20 ÷ 2.5 = $0.48 per 100 g
  3. The cheaper unit price is better value.
6.Which is better value: pencils at $7.92 for a pack of 24, or at $1.62 for a pack of 6?

Answer: $1.62 for a pack of 6 ($0.27 per pencil)

  1. First: $7.92 ÷ 24 = $0.33 per pencil
  2. Second: $1.62 ÷ 6 = $0.27 per pencil
  3. The cheaper unit price is better value.
7.Which is better value: oats at $4.20 for 1 kg, or at $2.90 for 500 g?

Answer: $4.20 for 1 kg ($0.42 per 100 g)

  1. First: $4.20 ÷ 10 = $0.42 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: rice at $1.80 for 1 kg, or at $1.40 for 500 g?

Answer: $1.80 for 1 kg ($0.18 per 100 g)

  1. First: $1.80 ÷ 10 = $0.18 per 100 g
  2. Second: $1.40 ÷ 5 = $0.28 per 100 g
  3. The cheaper unit price is better value.
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