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Comparing Quantities Class 7 Worksheet Maths Chapter 7

Q.1. Find the ratio of (in lowest from) :
 (a) 200g to 4 Kg
 (b) 80 Paise to  ₹2
 (c) 30 days to 36 hours 

Comparing Quantities Class 7 Worksheet Maths Chapter 7  View Answer

Ans. (a) 1 : 20
(b) 2 : 5
(c) 20 : 1 

Q.2. If 3 : x :: 9 : 15 then find the value of x. 

Comparing Quantities Class 7 Worksheet Maths Chapter 7  View Answer

Ans. x = 5

Q.3. Express the following percents as the decimal fraction : (a) 0.07%
 (b) 15%

Comparing Quantities Class 7 Worksheet Maths Chapter 7  View Answer

Ans. (a) 0.0007
(b) 0.15

Q.4. Express each of the following percents as fraction in the simplest form :
(a) Comparing Quantities Class 7 Worksheet Maths Chapter 7
  (b) 75% 

Comparing Quantities Class 7 Worksheet Maths Chapter 7  View Answer

Ans. 

(a)Comparing Quantities Class 7 Worksheet Maths Chapter 7

(b) Comparing Quantities Class 7 Worksheet Maths Chapter 7

Q.5. Express each of the following fractions as percent :

(a) Comparing Quantities Class 7 Worksheet Maths Chapter 7

(b) Comparing Quantities Class 7 Worksheet Maths Chapter 7

Comparing Quantities Class 7 Worksheet Maths Chapter 7  View Answer

Ans. (a) 525%
(b) 45% 

Q.6. Find 20% of  ₹2500. 

Comparing Quantities Class 7 Worksheet Maths Chapter 7  View Answer

Ans. ₹500

Q.7. Find the whole quantity if 40% of it is 500 km

Comparing Quantities Class 7 Worksheet Maths Chapter 7  View Answer

Ans. 1250 km

Q.8. In the market cost of 1 dozen bananas are ₹48. Find the cost of 10 bananas. 

Comparing Quantities Class 7 Worksheet Maths Chapter 7  View Answer

Ans. ₹40

Q.9. If the ratio of angles of a triangle is 2:3:4, then find the measure of these angles. 

Comparing Quantities Class 7 Worksheet Maths Chapter 7  View Answer

Ans. 40°, 60°, 80°

Q.10. If 75% of x is 18 then find the value of x.

Comparing Quantities Class 7 Worksheet Maths Chapter 7  View Answer

Ans. x = 24  

Q.11. Chalk contains Calcium, Carbon and Oxygen in the ratio 10:3:12. Find the percentage of Carbon in chalk. 

Comparing Quantities Class 7 Worksheet Maths Chapter 7  View Answer

Ans. 12%

Q.12. In a city, 35% are females, 45% are males, and the remaining are children. What % are children? 

Comparing Quantities Class 7 Worksheet Maths Chapter 7  View Answer

Ans. 20%

Q.13. Compute the Simple Interest on a sum of ₹ 900 for 5 years at the ratio of 6% per annum. 

Comparing Quantities Class 7 Worksheet Maths Chapter 7  View Answer

Ans. ₹270

Q.14. The cost price of 8 books is equal to the selling price of 6 books. Find the gain percent. 

Comparing Quantities Class 7 Worksheet Maths Chapter 7  View Answer

Ans. Comparing Quantities Class 7 Worksheet Maths Chapter 7

Q.15. What principal will amount to ₹ 900 in 6 years at 10% Simple Interest? 

Comparing Quantities Class 7 Worksheet Maths Chapter 7  View Answer

Ans. ₹562.50

Q.16. There are 120 children living in Seemapuri 'J' Black. According to a survey conducted in 2014, out of these 24 children do not go to school" Under the project "School Chale Hum" these students admitted to school based on the above statement answer the following questions.
 (a) In 2014, how many children did not go to school?
 (b) Under the Project "School Chale Hum" How many children are admitted to school?

Comparing Quantities Class 7 Worksheet Maths Chapter 7  View Answer

Ans. (a) 20%
(b) 100%

The document Comparing Quantities Class 7 Worksheet Maths Chapter 7 is a part of the Class 7 Course Mathematics (Maths) Class 7.
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FAQs on Comparing Quantities Class 7 Worksheet Maths Chapter 7

1. What are the basic concepts involved in comparing quantities?
Ans. The basic concepts involved in comparing quantities include ratios, percentages, and fractions. These concepts help us understand the relationship between different quantities and allow us to express one quantity in relation to another.
2. How do you calculate percentage increase or decrease in quantities?
Ans. To calculate percentage increase, subtract the original quantity from the new quantity, divide the result by the original quantity, and then multiply by 100. For percentage decrease, subtract the new quantity from the original quantity, divide by the original quantity, and multiply by 100.
3. What is the significance of ratios in comparing quantities?
Ans. Ratios are significant in comparing quantities because they provide a way to express the relative size of two or more quantities. They help in simplifying comparisons and can be used to analyze relationships in various contexts, such as finance, recipes, or population studies.
4. Can you explain how to solve word problems related to comparing quantities?
Ans. To solve word problems related to comparing quantities, first identify the quantities involved and the relationships between them. Translate the word problem into mathematical expressions, apply the appropriate formulas for ratios or percentages, and then solve for the unknown quantity using algebraic methods.
5. What are some common mistakes to avoid when comparing quantities?
Ans. Common mistakes to avoid include misinterpreting the question, confusing percentages and ratios, neglecting to convert units when necessary, and not double-checking calculations. It’s important to read the problem carefully and ensure that all steps are followed accurately.
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