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Worksheet: Ratio, Proportion, and Unitary Method | Mathematics Class 6 ICSE PDF Download

A. Multiple Choice Questions

Q1. Find the ratio of 2.4 m to 150 cm.
(a) 4:5
(b) 8:5
(c) 5:8
(d) 12:15

Q2. Simplify the ratio 42 : 70.
(a) 3:5
(b) 6:10
(c) 21:35
(d) 2:3

Q3. Which ratio is larger: 7:12 or 9:16?
(a) 7:12
(b) 9:16
(c) Both are equal
(d) Cannot be compared

Q4. If 12 : x = 9 : 15, find x.
(a) 18
(b) 20
(c) 12
(d) 10

Q5. The cost of 5 notebooks is ₹120. What is the cost of 8 notebooks?
(a) ₹160
(b) ₹180
(c) ₹192
(d) ₹200

B. Short Answer Questions

Q6. Simplify the ratioWorksheet: Ratio, Proportion, and Unitary Method | Mathematics Class 6 ICSE

Q7. Divide ₹840 in the ratio 2 : 5.

Q8. Are the ratios 14:21 and 20:30 equal?

Q9. In a proportion, 18 : x :: 12 : 16. Find x.

Q10. 7 kg of rice costs ₹490. Find the cost of 3 kg of rice.

C. Long Answer Questions

Q11. If 14 bags of rice weigh 112 kg, how many bags of rice will weigh 168 kg?

Q12. A ribbon 210 cm long is cut into two parts in the ratio 4 : 3. Find the length of each part.

Q13. A shop sells apples at a constant price. If 6 kg cost ₹270, find: 
(i) the cost of 9 kg
(ii) how many kilograms can be bought for ₹200.

​You can access the solutions of this worksheet here

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FAQs on Worksheet: Ratio, Proportion, and Unitary Method - Mathematics Class 6 ICSE

1. What is the definition of ratio and how is it used in everyday life?
Ans. A ratio is a relationship between two quantities, showing how many times one value contains or is contained within the other. It is often expressed as "a:b" or "a/b". Ratios are used in everyday life to compare quantities, such as recipes (e.g., the ratio of flour to sugar), in finance (e.g., debt-to-income ratio), and in sports statistics (e.g., goals scored to games played).
2. How do you solve problems involving proportions?
Ans. To solve problems involving proportions, you can use cross-multiplication. If you have a proportion a/b = c/d, you can multiply a by d and b by c to set up the equation a × d = b × c. Then, you can solve for the unknown variable by isolating it on one side of the equation.
3. Can you explain the unitary method and give an example?
Ans. The unitary method is a technique used to find the value of a single unit before multiplying it to find the value of multiple units. For example, if 5 apples cost $10, we first find the cost of one apple (cost of 1 apple = $10/5 = $2). Then, if we want to find the cost of 8 apples, we multiply the cost of one apple by 8 (cost of 8 apples = $2 × 8 = $16).
4. What are the differences between a ratio and a proportion?
Ans. A ratio is a comparison of two quantities, while a proportion states that two ratios are equal. For example, if the ratio of boys to girls in a class is 3:2, that is a ratio. If we say that 3 boys out of 5 students are boys and 2 girls out of 5 students are girls, we can express this as a proportion: 3/5 = 2/5.
5. How can understanding ratios and proportions help in real-life situations?
Ans. Understanding ratios and proportions is essential in various real-life situations such as cooking, shopping, budgeting, and scaling models. For instance, when adjusting a recipe for more or fewer servings, knowing the ratio of ingredients helps maintain the flavor. In finance, understanding proportions can help in making informed decisions about investments and savings.
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