6th Grade Best Buys and Unit Prices Worksheet — Level 2 — Practice Set 3 — Answers
Answer sheet with worked solutions for the 6th Grade ratios & rates worksheet.
6th Grade Best Buys and Unit Prices Worksheet — Level 2 — 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: oats at $2.50 for 1 kg, or at $1.20 for 2 kg?
Answer: $1.20 for 2 kg ($0.06 per 100 g)
- First: $2.50 ÷ 10 = $0.25 per 100 g
- Second: $1.20 ÷ 20 = $0.06 per 100 g
- The cheaper unit price is better value.
2.Which is better value: pasta at $2.85 for 500 g, or at $7.20 for 1 kg?
Answer: $2.85 for 500 g ($0.57 per 100 g)
- First: $2.85 ÷ 5 = $0.57 per 100 g
- Second: $7.20 ÷ 10 = $0.72 per 100 g
- The cheaper unit price is better value.
3.Which is better value: pencils at $21.12 for a pack of 24, or at $12.48 for a pack of 12?
Answer: $21.12 for a pack of 24 ($0.88 per pencil)
- First: $21.12 ÷ 24 = $0.88 per pencil
- Second: $12.48 ÷ 12 = $1.04 per pencil
- The cheaper unit price is better value.
4.Which is better value: pasta at $0.75 for 500 g, or at $2.50 for 1 kg?
Answer: $0.75 for 500 g ($0.15 per 100 g)
- First: $0.75 ÷ 5 = $0.15 per 100 g
- Second: $2.50 ÷ 10 = $0.25 per 100 g
- The cheaper unit price is better value.
5.Which is better value: juice at $14.20 for 2 L, or at $8.30 for 1 L?
Answer: $14.20 for 2 L ($0.71 per 100 mL)
- First: $14.20 ÷ 20 = $0.71 per 100 mL
- Second: $8.30 ÷ 10 = $0.83 per 100 mL
- The cheaper unit price is better value.
6.Which is better value: pasta at $2.65 for 500 g, or at $6.90 for 1 kg?
Answer: $2.65 for 500 g ($0.53 per 100 g)
- First: $2.65 ÷ 5 = $0.53 per 100 g
- Second: $6.90 ÷ 10 = $0.69 per 100 g
- The cheaper unit price is better value.
7.Which is better value: pasta at $4.80 for 1 kg, or at $1.05 for 250 g?
Answer: $1.05 for 250 g ($0.42 per 100 g)
- First: $4.80 ÷ 10 = $0.48 per 100 g
- Second: $1.05 ÷ 2.5 = $0.42 per 100 g
- The cheaper unit price is better value.
8.Which is better value: juice at $6.20 for 1 L, or at $1.70 for 250 mL?
Answer: $6.20 for 1 L ($0.62 per 100 mL)
- First: $6.20 ÷ 10 = $0.62 per 100 mL
- Second: $1.70 ÷ 2.5 = $0.68 per 100 mL
- The cheaper unit price is better value.
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.