Year 8 Best Buys and Unit Prices Worksheet — Level 1 — Practice Set 4 — Answers
Answer sheet with worked solutions for the Year 8 ratio & rates worksheet.
Success TutoringWorksheetsAnswer sheetYear 8 · Mathematics · Ratio & RatesYear 8 Best Buys and Unit Prices Worksheet — Level 1 — Practice Set 4 — Answers
Find the price for the same amount of each (the unit price), then compare. Show your working.
1.Oats costs $6.60 for 1 kg. What is the price per 100 g?
Answer: $0.66
- $6.60 ÷ 10 = $0.66 per 100 g
2.Juice costs $3.10 for 1 L. What is the price per 100 mL?
Answer: $0.31
- $3.10 ÷ 10 = $0.31 per 100 mL
3.Pasta costs $4.30 for 500 g. What is the price per 100 g?
Answer: $0.86
- $4.30 ÷ 5 = $0.86 per 100 g
4.Pencils costs $18.00 for a pack of 24. What is the price per pencil?
Answer: $0.75
- $18.00 ÷ 24 = $0.75 per pencil
5.Oats costs $5.40 for 2 kg. What is the price per 100 g?
Answer: $0.27
- $5.40 ÷ 20 = $0.27 per 100 g
6.Rice costs $3.05 for 500 g. What is the price per 100 g?
Answer: $0.61
- $3.05 ÷ 5 = $0.61 per 100 g
7.Oats costs $7.80 for 1 kg. What is the price per 100 g?
Answer: $0.78
- $7.80 ÷ 10 = $0.78 per 100 g
8.Oats costs $3.80 for 500 g. What is the price per 100 g?
Answer: $0.76
- $3.80 ÷ 5 = $0.76 per 100 g
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.