NCERT Solutions for Class 7 Maths Chapter 8 Exercise 8.2

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NCERT Solutions for Class 7 Maths Chapter 8 Comparing Quantities Exercise 8.2 is given with the article for the students to learn and solve. Exercise 8.2 introduces the concept of percentages as a way of comparing quantities.

Students learn the exact meaning of the word percentage and its various other applications. With the help of examples, students are explained the use of percentages when the total is not 100. Exercise 8.2 has questions that involve converting fractions to percentages, converting decimals to percentages, and converting percentages to fractions or decimals.

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Example From Class 7 Chapter 8 Comparing Quantities

Ques. Convert 112.5% into decimal and fractions.

Ans. Converting to decimal we get,

112.5% = 112.5 x 1/100

=\(\frac{1125}{10} \times \frac{1}{100}\)

= \(\frac{1125}{1000}\)

= 1.125

Converting to fraction we get,

112.5% = 112.5 x 1/100

=\(\frac{1125}{10} \times \frac{1}{100}\)

= \(\frac{1125}{1000}\)

Dividing numerator and denominator by 5 we get,

= \(\frac{225}{200}\)

Again simplifying the fraction further by dividing the numerator and denominator by 5 we get,

= \(\frac{45}{40}\)

Simplifying further by dividing once again by 5 (both numerator and denominator)

= \(\frac{9}{8}\)

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Ratio to Percentage	Calculating Percentages	Ratios

Class 7 Maths Important Links:

Maths MCQs	Difference Between in Maths	NCERT Solutions for Class 7 Maths
Maths Formulas	Geometry	Maths Study Material
Percentage Increase or Decrease	Arithmetics	Simple Interest