Class 7 Exam > Class 7 Notes > Mathematics (Maths) Class 7 > Worksheet Question & Answers : Comparing Quantities
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
View AnswerAns. (a) 1 : 20
(b) 2 : 5
(c) 20 : 1
Q.2. If 3 : x :: 9 : 15 then find the value of x.
View AnswerAns. x = 5
Q.3. Express the following percents as the decimal fraction : (a) 0.07%
(b) 15%
View AnswerAns. (a) 0.0007
(b) 0.15
Q.4. Express each of the following percents as fraction in the simplest form :
(a) 
(b) 75%
View AnswerAns.
(a)
(b) 
Q.5. Express each of the following fractions as percent :
(a) 
(b) 
View AnswerAns. (a) 525%
(b) 45%
Q.6. Find 20% of ₹2500.
View AnswerAns. ₹500
Q.7. Find the whole quantity if 40% of it is 500 km
View AnswerAns. 1250 km
Q.8. In the market cost of 1 dozen bananas are ₹48. Find the cost of 10 bananas.
View AnswerAns. ₹40
Q.9. If the ratio of angles of a triangle is 2:3:4, then find the measure of these angles.
View AnswerAns. 40°, 60°, 80°
Q.10. If 75% of x is 18 then find the value of x.
View AnswerAns. x = 24
Q.11. Chalk contains Calcium, Carbon and Oxygen in the ratio 10:3:12. Find the percentage of Carbon in chalk.
View AnswerAns. 12%
Q.12. In a city, 35% are females, 45% are males, and the remaining are children. What % are children?
View AnswerAns. 20%
Q.13. Compute the Simple Interest on a sum of ₹ 900 for 5 years at the ratio of 6% per annum.
View AnswerAns. ₹270
Q.14. The cost price of 8 books is equal to the selling price of 6 books. Find the gain percent.
View AnswerAns. 
Q.15. What principal will amount to ₹ 900 in 6 years at 10% Simple Interest?
View AnswerAns. ₹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?
View AnswerAns. (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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