Year 7 Best Buys and Unit Prices Worksheet — Level 1 — Practice Set 2 — Answers
Answer sheet with worked solutions for the Year 7 ratio & rates worksheet.
Year 7 Best Buys and Unit Prices Worksheet — Level 1 — Practice Set 2 — Answers
Find the price for the same amount of each (the unit price), then compare. Show your working.
1.Pasta costs $7.90 for 1 kg. What is the price per 100 g?
Answer: $0.79
- $7.90 ÷ 10 = $0.79 per 100 g
2.Juice costs $8.60 for 1 L. What is the price per 100 mL?
Answer: $0.86
- $8.60 ÷ 10 = $0.86 per 100 mL
3.Rice costs $12.60 for 2 kg. What is the price per 100 g?
Answer: $0.63
- $12.60 ÷ 20 = $0.63 per 100 g
4.Oats costs $13.40 for 2 kg. What is the price per 100 g?
Answer: $0.67
- $13.40 ÷ 20 = $0.67 per 100 g
5.Pencils costs $3.24 for a pack of 12. What is the price per pencil?
Answer: $0.27
- $3.24 ÷ 12 = $0.27 per pencil
6.Rice costs $7.60 for 1 kg. What is the price per 100 g?
Answer: $0.76
- $7.60 ÷ 10 = $0.76 per 100 g
7.Rice costs $4.00 for 2 kg. What is the price per 100 g?
Answer: $0.20
- $4.00 ÷ 20 = $0.20 per 100 g
8.Juice costs $1.30 for 250 mL. What is the price per 100 mL?
Answer: $0.52
- $1.30 ÷ 2.5 = $0.52 per 100 mL
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.