Class 8 Mathematics Chapter 7: Proportional Reasoning-1 — practice questions with answers
Free practice for Class 8 Mathematics, Chapter 7: Proportional Reasoning-1. Try the solved questions below, then take a free test with instant marking and explanations.
45 questions17 easy, 19 medium, 9 hardNCERT · CBSE · State boards
Sample questions with solutions
Q1. What is 60 : 40 in its simplest form?
- 3 : 2
- 6 : 4
- 2 : 3
- 30 : 20
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Answer: A. 3 : 2
Why: Divide both terms by 20. [p.161]
Why: Divide both terms by 20. [p.161]
Q2. In the ratio a : b, the numbers a and b are called the ______ of the ratio.
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Answer: terms
Why: 60 and 40 are the terms of 60 : 40. [p.161]
Why: 60 and 40 are the terms of 60 : 40. [p.161]
Q3. When are two ratios said to be in proportion?
- When they are the same in their simplest forms
- When their first terms are equal
- When their sums are equal
- Always
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Answer: A. When they are the same in their simplest forms
Why: 60 : 40 :: 30 : 20 because both simplify to 3 : 2. [p.162]
Why: 60 : 40 :: 30 : 20 because both simplify to 3 : 2. [p.162]
Q4. 6 glasses of lemonade need 10 spoons of sugar. How many spoons for 18 glasses with the same sweetness?
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Answer: 30 (± 0)
Why: 6 : 10 :: 18 : 30. [p.163]
Why: 6 : 10 :: 18 : 30. [p.163]
Q5. Share 42 in the ratio 4 : 3. What is the larger part?
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Answer: 24 (± 0)
Why: The whole is 4 + 3 = 7 groups of 6: 24 and 18. [p.174]
Why: The whole is 4 + 3 = 7 groups of 6: 24 and 18. [p.174]
Q6. Share 12 counters in the ratio 3 : 1. How many does the first person get?
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Answer: 9 (± 0)
Why: 12 ÷ 4 = 3 per group: 9 and 3. [p.173]
Why: 12 ÷ 4 = 3 per group: 9 and 3. [p.173]
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Frequently asked questions
How many practice questions are there for Class 8 Mathematics Chapter 7: Proportional Reasoning-1?
45 questions (17 easy, 19 medium, 9 hard). A few are solved on this page; the free test shows the answer and explanation for every question after you submit.
Is this chapter from the NCERT book?
Yes — it follows the NCERT Class 8 Mathematics syllabus, used by CBSE and many state boards.