NCERT Solutions for Class 6 Maths Chapter 7 (Ex 7.3)
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Access NCERT Solutions for Class 6 Mathematics Chapter 7 Fractions
Exercise 7.3
1. Write the fractions for the following. Are all these fractions equivalent?
a.
Ans: Observe the first circle. It is divided into two parts out of which one part is shaded.
So, the fraction is $\dfrac{1}{2}$.
Now, Observe the second circle. It is divided into four parts out of which two parts are shaded. So, the fraction is $\dfrac{2}{4}$. Thus, $\dfrac{{2}}{{4}}=\dfrac{1}{2}$.
Observe the third circle. It is divided into six parts out of which three parts are shaded. So, the fraction is $\dfrac{3}{6}$. Thus, $\dfrac{{3}}{{6}}=\dfrac{1}{2}$.
Observe the fourth circle. It is divided into eight parts out of which four parts are shaded. So, the fraction is $\dfrac{4}{8}$. Thus, $\dfrac{{4}}{{8}}=\dfrac{1}{2}$.
Hence, all the fractions are equivalent.
b.
Ans: Observe the first figure. Four circles are shaded out of 12 circles. So, the fraction is $\dfrac{4}{12}$. Thus, $\dfrac{{4}}{{12}}=\dfrac{1}{3}$.
Observe the second figure. Three circles are shaded out of nine circles. So, the fraction is $\dfrac{3}{9}$. Thus, $\dfrac{{3}}{{9}}=\dfrac{1}{3}$
Observe the third figure. Two circles are shaded out of six circles. So, the fraction is $\dfrac{2}{6}$. Thus, $\dfrac{{2}}{{6}}=\dfrac{1}{3}$.
Observe the fourth figure. One circle is shaded out of three circles. So, the fraction is $\dfrac{1}{3}$.
Observe the fifth figure. Six circles are shaded out of fifteen circles. So, the fraction is $\dfrac{6}{15}$. Thus, $\dfrac{{6}}{{15}}=\dfrac{2}{5}$.
2. Write the fraction and pair up the equivalent fractions to each row.
Ans: Find the fractions of each part and then match the equivalent fractions.
In option (a), one part is shaded out of two parts. Thus, the fraction is $\dfrac{1}{2}$.
In option (b), four parts are shaded out of six parts. Thus, the fraction is $\dfrac{4}{6}$.
$\dfrac{{4}}{{6}}=\dfrac{2}{3}$
In option (c), three parts are shaded out of nine parts. Thus, the fraction is $\dfrac{3}{9}$.
$\dfrac{{3}}{{9}}=\dfrac{1}{3}$
In option (d), three parts are shaded out of four parts. Thus, the fraction is $\dfrac{2}{8}$.
$\dfrac{{2}}{{8}}=\dfrac{1}{4}$
In option (e), three parts are shaded out of four parts. Thus, the fraction is $\dfrac{3}{4}$.
In option (i), six parts are shaded out of eighteen parts. Thus, the fraction is $\dfrac{6}{18}$.
$\dfrac{{6}}{{18}}=\dfrac{1}{3}$
In option (ii), four parts are shaded out of eight parts. Thus, the fraction is $\dfrac{4}{8}$.
$\dfrac{{4}}{{8}}=\dfrac{1}{2}$
In option (iii), twelve parts are shaded out of sixteen parts. Thus, the fraction is$\dfrac{12}{16}$.
$\dfrac{{12}}{{16}}=\dfrac{3}{4}$
In option (iv), eight parts are shaded out of twelve parts. Thus, the fraction is $\dfrac{8}{12} =\dfrac{2}{3}$
In option (v), four parts are shaded out of sixteen parts. Thus, the fraction is $\dfrac{4}{16}$.
$\dfrac{{4}}{{16}}=\dfrac{1}{4}$
Thus, from the above observations the fractions can be matched as follows.
Option (a) matches with option (ii).
Option (b) matches with option (iv).
Option (c) matches with option (i).
Option (d) matches with option (v).
Option (e) matches with option (iii).
3. Replace $\boxed{}$ in each of the following by the correct number.
a. $\dfrac{2}{7} = \dfrac{8}{{\boxed{}}}$
Ans: Multiply the numerator and denominator by 4 to get the missing value.
$\dfrac{{2 \times 4}}{{7 \times 4}} = \dfrac{8}{{\boxed{28}}}$
b. $\dfrac{5}{8} = \dfrac{{10}}{{\boxed{}}}$
Ans: Multiply the numerator and denominator by 2 to get the missing value.
$\dfrac{{5 \times 2}}{{8 \times 2}} = \dfrac{{10}}{{\boxed{16}}}$
c. $\dfrac{3}{5} = \dfrac{{\boxed{}}}{{20}}$
Ans: Multiply the numerator and denominator by 2 to get the missing value.
$\dfrac{{3 \times 4}}{{5 \times 4}} = \dfrac{{\boxed{12}}}{{20}}$
d. $\dfrac{{45}}{{60}} = \dfrac{{15}}{{\boxed{}}}$
Ans: Divide the numerator and denominator by 3 to get the missing value.
$\dfrac{{45 \div 3}}{{60 \div 3}} = \dfrac{{15}}{{\boxed{20}}}$
e. $\dfrac{{18}}{{24}} = \dfrac{{\boxed{}}}{4}$
Ans: Divide the numerator and denominator by 6 to get the missing value.
$\dfrac{{18 \div 6}}{{24 \div 6}} = \dfrac{{\boxed3}}{4}$
4. Find the equivalent fraction of $\dfrac{3}{5}$ having:
a. Denominator 20
Ans: To make the denominator 20, multiply numerator and denominator by 4.
$\dfrac{3\times 4}{5\times 4}=\dfrac{12}{20}$
Thus, the equivalent fraction is $\dfrac{12}{20}$.
b. Numerator 9
Ans: To make the numerator 9, multiply numerator and denominator by
$\dfrac{3\times 3}{5\times 3}=\dfrac{9}{15}$
Thus, the equivalent fraction is $\dfrac{9}{15}$.
c. Denominator 30
Ans: To make the denominator 30, multiply numerator and denominator by 6.
$\dfrac{3\times 6}{5\times 6}=\dfrac{18}{30}$
Thus, the equivalent fraction is $\dfrac{18}{30}$.
d. Numerator 27
Ans: To make the numerator 27, multiply numerator and denominator by 9.
$\dfrac{3\times 9}{5\times 9}=\dfrac{27}{45}$
Thus, the equivalent fraction is $\dfrac{27}{45}$.
5. Find the equivalent fraction of $\dfrac{36}{48}$ with:
a. Numerator 9
Ans: To make the numerator 9, divide the numerator and denominator by 4.
$\dfrac{36\div 4}{48\div 4}=\dfrac{9}{12}$
Thus, the equivalent fraction is $\dfrac{9}{12}$.
b. Denominator 4
Ans: To make the denominator 4, divide the numerator and denominator by 12.
$\dfrac{36\div 12}{48\div 12}=\dfrac{3}{4}$
Thus, the equivalent fraction is $\dfrac{3}{4}$.
6. Check whether the given fractions are equivalent.
a. $\dfrac{5}{9}$, $\dfrac{30}{54}$
Ans: We can see that the fraction $\dfrac{5}{9}$ is already in simplest form.
To simplify the other fraction, $\dfrac{30}{54}$ we can observe that the numerator and denominator have 6 as their common factor. So, divide the numerator and denominator by 6.
$\dfrac{30\div 6}{54\div 6}=\dfrac{5}{9}$
Thus, both the fractions are equivalent.
b. $\dfrac{3}{10}$, $\dfrac{12}{50}$
Ans: We can see that the fraction $\dfrac{3}{10}$ is already in simplest form.
Multiply the numerator and denominator by 5 to get a fraction.
$\dfrac{3\times 5}{10\times 5}=\dfrac{15}{50}$
Hence, $\dfrac{15}{50}\ne \dfrac{12}{50}$. Thus, both the fractions are not equivalent.
7. Reduce the following fractions to simplest form:
a. $\dfrac{48}{60}$
Ans: Expand numerator and denominator using prime factors and cancel the common factor to get the required fraction.
$\dfrac{48}{60}=\dfrac{{2}\times {2}\times 2\times 2\times {3}}{{2}\times {2}\times 3\times 5}$
$\dfrac{48}{60}=\dfrac{4}{5}$
Hence, the simplest form is $\dfrac{4}{5}$.
b. $\dfrac{150}{60}$
Ans: Expand numerator and denominator using prime factors and cancel the common factor to get the required fraction.
$\dfrac{150}{60}=\dfrac{{3}\times 5\times {10}}{2\times {3}\times {10}}$
$\dfrac{150}{60}=\dfrac{5}{2}$
Hence, the simplest form is $\dfrac{5}{2}$.
c. $\dfrac{84}{98}$
Ans: Expand numerator and denominator using prime factors and cancel the common factor to get the required fraction.
$\dfrac{84}{98}=\dfrac{2\times 3\times {2}\times {7}}{{7}\times {2}\times 7}$
$\dfrac{84}{98}=\dfrac{2\times 3}{7}$
$\dfrac{84}{98}=\dfrac{6}{7}$
Hence, the simplest form is $\dfrac{6}{7}$.
d. $\dfrac{12}{52}$
Ans: Expand numerator and denominator using prime factors and cancel the common factor to get the required fraction.
\[\dfrac{12}{52}=\dfrac{{2}\times {2}\times 3}{{2}\times {2}\times 13}\]
\[\dfrac{12}{52}=\dfrac{3}{13}\]
Hence, the simplest form is \[\dfrac{3}{13}\].
e. $\dfrac{7}{28}$
Ans: Expand numerator and denominator using prime factors and cancel the common factor to get the required fraction.
\[\dfrac{7}{28}=\dfrac{{7}}{2\times {7}\times 2}\]
\[\dfrac{7}{28}=\dfrac{1}{4}\]
Hence, the simplest form is \[\dfrac{1}{4}\].
8. Ramesh had 20 pencils, Sheelu had 50 pencils and Jamaal had 80 pencils. After 4 months, Ramesh used up 10 pencils, Sheelu used up 25 pencils and Jamaal used up 40 pencils. What fraction did each use up? Check if each has used up an equal fraction of her/his pencils?
Ans: We can find the fraction of pencils as follows.
$\text{Fraction}=\dfrac{\text{pencils used}}{\text{total pencils}}$
Ramesh had 20 pencils and he used 10 out of those 20 pencils. So, the fraction of used pencils is $\dfrac{10}{20}$.
$\dfrac{{10}}{{20}}=\dfrac{1}{2}$
Sheelu had 50 pencils and she used 25 out of those 50 pencils. So, the fraction of used pencils is $\dfrac{25}{50}$.
$\dfrac{{25}}{{50}}=\dfrac{1}{2}$
Jamaal had 80 pencils and he used 40 out of those 80 pencils. So, the fraction of used pencils is $\dfrac{40}{80}$.
$\dfrac{{40}}{{80}}=\dfrac{1}{2}$
All the fractions obtained are equal. So, each person used up an equal fraction of pencils.
9. Match the equivalent fractions and write two fraction for each:
i. $\dfrac{250}{400}$  a. $\dfrac{2}{3}$ 
ii. $\dfrac{180}{200}$  b. $\dfrac{2}{5}$ 
iii. $\dfrac{660}{990}$  c. $\dfrac{1}{2}$ 
iv. $\dfrac{10}{360}$  d. $\dfrac{5}{8}$ 
v. $\dfrac{220}{550}$  e. $\dfrac{9}{10}$ 
i. Simplify $\dfrac{250}{400}$ by dividing the numerator and denominator by the common factor of the numerator and denominator. We know that 50 is the common factor which can divide both numerator and denominator. Therefore,
$\dfrac{250\div 50}{400\div 50}=\dfrac{5}{8}$
Thus, the obtained fraction matches with option (d).
Now, find the two equivalent fractions by multiplying the numerator and denominator of the simplest form by 2 and 3 simultaneously.
$\dfrac{5\times 2}{8\times 2}=\dfrac{10}{16}$
$\dfrac{5\times 3}{8\times 3}=\dfrac{15}{24}$
Hence, two fractions are $\dfrac{10}{16}$ and $\dfrac{15}{24}$.
ii. Simplify $\dfrac{180}{200}$ by dividing the numerator an denominator by the common factor of the numerator and denominator. We know that 20 is the common factor which can divide both numerator and denominator. Therefore,
$\dfrac{180\div 20}{200\div 20}=\dfrac{9}{10}$
Thus, the obtained fraction matches with option (e).
Now, find the two equivalent fractions by multiplying the numerator and denominator of the simplest form by 2 and 3 simultaneously.
$\dfrac{9\times 2}{10\times 2}=\dfrac{18}{20}$
$\dfrac{9\times 3}{10\times 3}=\dfrac{27}{30}$
Hence, two fractions are $\dfrac{18}{20}$ and $\dfrac{27}{30}$.
iii. Simplify $\dfrac{660}{990}$ by dividing the numerator and denominator by the common factor of the numerator and denominator. We know that 330 is the common factor which can divide both numerator and denominator. Therefore,
$\dfrac{660\div 330}{990\div 330}=\dfrac{2}{3}$
Thus, the obtained fraction matches with option (a).
Now, find the two equivalent fractions by multiplying the numerator and denominator of the simplest form by 2 and 3 simultaneously.
$\dfrac{2\times 2}{3\times 2}=\dfrac{4}{6}$
$\dfrac{2\times 3}{3\times 3}=\dfrac{6}{9}$
Hence, two fractions are $\dfrac{4}{6}$ and $\dfrac{6}{9}$.
iv. Simplify $\dfrac{180}{360}$ by dividing the numerator and denominator by the common factor of the numerator and denominator. We know that 180 is the common factor which can divide both numerator and denominator. Therefore,
$\dfrac{180\div 180}{360\div 180}=\dfrac{1}{2}$
Thus, the obtained fraction matches with option (c).
Now, find the two equivalent fractions by multiplying the numerator and denominator of the simplest form by 2 and 3 simultaneously.
$\dfrac{1\times 2}{2\times 2}=\dfrac{2}{4}$
$\dfrac{1\times 3}{2\times 3}=\dfrac{3}{6}$
Hence, two fractions are $\dfrac{2}{4}$ and $\dfrac{3}{6}$.
v. Simplify $\dfrac{220}{550}$ by dividing the numerator and denominator by the common factor of the numerator and denominator. We know that 110 is the common factor which can divide both numerator and denominator. Therefore,
$\dfrac{220\div 110}{550\div 110}=\dfrac{2}{5}$
Thus, the obtained fraction matches with option (b).
Now, find the two equivalent fractions by multiplying the numerator and denominator of the simplest form by 2 and 3 simultaneously.
$\dfrac{2\times 2}{5\times 2}=\dfrac{4}{10}$
$\dfrac{2\times 3}{5\times 3}=\dfrac{6}{15}$
Hence, two fractions are $\dfrac{4}{10}$ and $\dfrac{6}{15}$.
NCERT Solutions for Class 6 Maths Chapter 7 Fractions Exercise 7.3
Opting for the NCERT solutions for Ex 7.3 Class 6 Maths is considered as the best option for the CBSE students when it comes to exam preparation. This chapter consists of many exercises. Out of which we have provided the Exercise 7.3 Class 6 Maths NCERT solutions on this page in PDF format. You can download this solution as per your convenience or you can study it directly from our website/ app online.
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