Grade 8 · Math · Ratios and proportions | QuizPrint

QuizPrint.CA
Fresh practice from quizprint.ca. Unofficial practice — not a ministry test or resource.
Grade 8 Math: Ratios and proportions QuizPrint.CA Ontario curriculum: Mathematics (2020) · Number B2.8 — compare proportional situations and determine unknown values NameDateScore 1. A box has 4 red counters and 16 blue counters. What is the ratio of red counters to all counters? 2. If 19:4 = 76:x, what is x? 3. A ratio table shows 9 → 23, 18 → 46, 27 → 69. What goes with 36? 4. 9 pencils cost $64.35. How much does one pencil cost? 5. A train travels 64 km each hour. At the same rate, how far does it travel in 6 hours? 6. A map scale is 1 cm to 21 km. How far apart are two towns that are 3 cm apart on the map? 7. A drawing is enlarged by a scale factor of 9. A side that measures 14 cm becomes how long? 8. A club has 64 students. The ratio of boys to girls is 5:3. Then 4 girls join and 8 boys leave. What is the new ratio of girls to boys? 9. A shop uses 8 cups of mix to make 10 muffins. If the shop plans to sell 30 muffins and expects to lose 0.25 cups to waste for each batch of 10, how much mix should they buy in total? 10. The graph shows a proportional relationship between crates (x) and minutes (y). What is the unit rate in minutes per crate? Sign in to manage students and save worksheet results. Fresh practice from quizprint.ca. Unofficial practice — not a ministry test or resource. Answer key Grade 8 Math: Ratios and proportions Ontario curriculum: Mathematics (2020) · Number B2.8 — compare proportional situations and determine unknown values Question numbers match the worksheet. 1.B) 4:20 2.C) 16Both parts are multiplied by 4. 3.D) 92Each row multiplies 9:23 by the same number. 4.C) $7.15 5.B) 384 km 6.D) 63 km 7.A) 126 cm 8.D) 7:8Start with 40 boys and 24 girls, apply the changes, then simplify. 9.C) 24.75 cups3 batches need 24 cups for the recipe plus 0.75 cups of waste. 10.A) 12 minutes per crateWhen x = 1, y = 12, so the unit rate is 12 minutes per crate. Keep this page if you are printing for a child. Fresh practice from quizprint.ca. Unofficial practice — not a ministry test or resource.

Related worksheets

Same topic, a new set of questions.