Home | | Maths 7th Std | Converting Fraction to Percentage

Term 3 Chapter 2 | 7th Maths - Converting Fraction to Percentage | 7th Maths : Term 3 Unit 2 : Percentage and Simple Interest

Chapter: 7th Maths : Term 3 Unit 2 : Percentage and Simple Interest

Converting Fraction to Percentage

All numbers which are represented using numerator and denominator are fractions.

Converting Fraction to Percentage

All numbers which are represented using numerator and denominator are fractions. They can have any number as a denominator. If the denominator of the fraction is hundred then it can be very easily expressed as a percentage. Let us try to convert different fraction to percentage.

 

Example 2.1

Write 1/5 as per cent.

Solution


We have 1/5 = 1/5 × 100/100 = 1/5 ×100% = 100/5 % = 20% .

 

Example 2.2

 Convert 7/4 to per cent.

Solution


We have 7/4 = 7/4 × 100/100 = 7/4 ×100% = 700/4 % = 175% .

 

Example 2.3

Out of 20 beads, 5 beads are red. What is the percentage of red.

Solution


We have =5/20×5/20×100/100 =5/20 ×100% =500/20 % = 25%.

 

Example 2.4

Convert the fraction 23/30 as per cent.

Solution


We have 23/30 = 23/30 × 100/100 = 23/30 ×100% = 76 2/3 %

From these examples we see that the percentage of proper fractions are less than 100 and that of improper fractions are more than 100.

 

Try these

Convert the fractions as percentage.

(i) 1/20  (ii) 13/25   (iii) 45/50   iv 18/5   (v) 27/10  (vi) 72/90

Solution: 


(i) 1/20 = 1/20 × 100/100 = 1/20 × 100% = 5 %

(i) 1/20 = 1/20 × 100/100 = 1 / 20 × 100% = 5 %

(ii) 13/25 = 13/25 × 100/100 = 13 / 25 × 100% = 52 %

(iii) 45/20 = 45/50 × 100/100 = 45 / 50 × 100% = 90 %

(iv) 18/5 = 18/5 × 100/100 = 18 / 5 × 100% = 360 %

(v) 27/10 = 27/10 × 100/100 = 27 / 10 × 100% = 270 %

(vi) 72/90 = 72/90 × 100/100 = 72 / 90 × 100% = 80 %


Tags : Term 3 Chapter 2 | 7th Maths , 7th Maths : Term 3 Unit 2 : Percentage and Simple Interest
Study Material, Lecturing Notes, Assignment, Reference, Wiki description explanation, brief detail
7th Maths : Term 3 Unit 2 : Percentage and Simple Interest : Converting Fraction to Percentage | Term 3 Chapter 2 | 7th Maths


Privacy Policy, Terms and Conditions, DMCA Policy and Compliant

Copyright © 2018-2023 BrainKart.com; All Rights Reserved. Developed by Therithal info, Chennai.