Scale Ratio From One Side (Year 5)
Practise scale ratio from one side within Ratio & Proportion for Year 5, with worked examples and instant feedback.
The questions below are generated to match the National Curriculum for Year 5 and get harder as you progress from Rookie to Guru.
Worked examples
RookieRead and interpret directly.
Simplify 6 : 9.
- 2 : 3
- 3 : 2
- 6 : 9
- 1 : 3
Answer: 2 : 3. Divide both by HCF 3.
ProCompare and infer.
A recipe uses flour and sugar in a ratio of 5 : 2. If you use 250 g of flour, how much sugar do you need?
- 100 g
- 125 g
- 150 g
- 500 g
Answer: 100 g. One 'part' of flour = 250 ÷ 5 = 50 g. Sugar is 2 parts, so 2 × 50 = 100 g of sugar.
GuruMulti-step reasoning.
Paint mix 2 white : 3 blue. To make 25 L of mix, how much blue?
- 15 L
- 10 L
- 5 L
- 12.5 L
Answer: 15 L. 5 parts = 25.
Related skills
Frequently asked questions
- What is scale ratio from one side?
- Practise scale ratio from one side within Ratio & Proportion for Year 5, with worked examples and instant feedback.
- How can my child practise scale ratio from one side at home?
- Work through the examples below, then start a free adaptive session. Northstar adjusts the difficulty automatically and tracks mastery over time.
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