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Question 12 Marks
Javed was given $\frac57$ of a basket of oranges. What fraction of oranges was left in the basket?
Answer
$1-\frac57\;=\frac{7\;-5}7=\;\frac27$
Hence, fraction$\frac27$ of oranges was left in the basket.
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Question 42 Marks
Solve :$1-\frac23\;\left(1\;=\;\frac33\right)$
Answer
$1-\frac23\;=\;\frac33-\;\frac23=\;\frac{3-\;2}3=\frac13$
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Question 62 Marks
Solve: $\frac{12}{15}-\frac{7}{15}$.
Answer
$\frac{12}{15}-\frac7{15}\;=\;\;\frac{12-7}{15}=\frac5{15}=\frac{5\div5}{15\div5}=\frac13$
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Question 72 Marks
Solve :$\frac1{22}+\frac{21}{22}$
Answer
$\frac1{22}+\frac{21}{22}\;=\;\;\frac{1+21}{22}=\frac{22}{22}=1$
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Question 102 Marks
Solve :$\frac1{18}+\frac1{18}$
Answer
$\frac1{18}+\frac1{18}\;=\;\;\frac{1+1}{18}=\frac2{18}=\frac{2\div2}{18\div2}=\frac19$
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Question 112 Marks
Rafiq exercised for $\frac36$ of an hour, while Rohit exercised for $\frac34$ of an hour. Who exerecised for longer time?
Answer
$\because$ $\frac34>\frac36$
$\therefore$ Rohit exercised for a longer time.
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Question 122 Marks
Find. Write and indicate how you solved this. Is$\frac{1}{15}$ equal to $\frac{4}{30}$?
Answer
Equivalent fractions of $\frac{1}{15}$ are $\frac2{30},\frac3{45},\frac4{60},.................$
$\because 4 \neq 8$
$\therefore$ $\frac{1}{15}$ is not equal to$\frac{4}{30}$
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Question 132 Marks
Find. Write and indicate how you solved this. Is$\frac{4}{5}$ equal$\frac{16}{20}$?
Answer
Equivalent fractions of$\frac{4}{5}$ are $\frac8{10},\frac{12}{15},\frac{16}{20},.................$
Clearly, $\frac{4}{5}$ is equal to $\frac{16}{20}$.
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Question 142 Marks
Compare the fraction and put an appropriate sign.
$\frac{3}{5} \square \frac{3}{7}$
Answer
Here, numerators of the two fractions are the same and $5 < 7.$
$\therefore \frac{3}{5} >\frac{3}{7}$
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Question 152 Marks
Compare the fraction and put an appropriate sign.
$\frac{4}{5} \square \frac{5}{5}$
Answer
Here, denominators of the fractions are same and $4 < 5.$
Therefore, $ \frac{4}{5}<\frac{5}{5}$
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Question 162 Marks
Compare the fraction and put an appropriate sign.
$\frac{1}{7} \square \frac{1}{4}$
Answer
Here, numerators of the two fractions are the same and $7 > 4.$
$\therefore \frac{1}{7} < \frac{1}{4}$
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Question 172 Marks
Compare the fraction and put an appropriate sign.
$\frac{3}{6} \square \frac{5}{6}$
Answer
Here denominators of the two fractions are the same and $3 < 5.$
Therefore, $ \frac{3}{6}<\frac{5}{6}$
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Question 182 Marks
In a class $A$ of $25$ students, $20$ passed with $60\%$ or more marks; in another class $B$ of $30$ students, $24$ passed with $60\%$ or more marks. In which class was a greater fraction of students getting with $60\%$ or more marks$?$
Answer
$\frac{20}{25}=\frac{20\div\;5}{25\div5}=\frac45$
$\frac{24}{30}=\frac{24\div\;6}{30\;\div6}=\frac45$
Hence, in both the class the same fraction $\frac45$ of total students got first class.
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Question 192 Marks
Find the equivalent fraction $\frac{36}{48}$ with denominator $4.$
Answer
$\frac{36}{48}=\frac{36\div12}{48\div\;12}=\frac34$
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Question 202 Marks
Find the equivalent fraction$\frac{36}{48}$ with numerator $9.$
Answer
$\frac{36}{48}=\frac{36\div4}{48\div\;4}=\frac9{12}$
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Question 212 Marks
Find the equivalent fraction $\frac35$ having numerator $27.$
Answer
$\frac35=\frac{3\times9}{5\;\times\;9}=\frac{27}{45}$
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Question 222 Marks
Find the equivalent fraction $\frac35$ having denominator $30.$
Answer
$\frac35=\frac{3\times6}{5\;\times\;6}=\frac{18}{30}$
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Question 232 Marks
Find the equivalent fraction$\frac35$ having numerator $9.$
Answer
$\frac35=\frac{3\times3}{5\;\times\;3}=\frac9{15}$
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Question 242 Marks
Find the equivalent fraction $\frac35$ having denominator $20.$
Answer
$\frac35=\frac{3\times4}{5\;\times\;4}=\frac{12}{20}$
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Question 252 Marks
Arya, Abhimanyu, and Vivek shared lunch. Arya has brought two sandwiches, one made of vegetables and one of jam. The other two boys forgot to bring their lunch. Arya agreed to share his sandwiches so that each person will have an equal share of each sandwich.
What part of a sandwich will each boy receive?
Answer
Here, each sandwich is divided into three equal parts.
Hence,
Each boy will get $\frac{1}{3}$ part of each sandwich.
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Question 262 Marks
Arya, Abhimanyu, and Vivek shared lunch. Arya has brought two sandwiches, one made of vegetables and one of jam. The other two boys forgot to bring their lunch. Arya agreed to share his sandwiches so that each person will have an equal share of each sandwich.
How can Arya divide his sandwiches so that each person has an equal share?
Answer
Given that,
Arya has brought two sandwiches, one made of vegetables and the other of jam.
Therefore,
To divide both the sandwiches equally among them,
He will divide each sandwich into three equal parts.
and he will give one part of each sandwich to each one of them.
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Question 272 Marks
What fraction of a day is $8$ hours$?$
Answer
$1$ day $= 24$ hours
$\therefore$ Required fraction $={ 8\over24} ={ 8 ÷ 8\over24 ÷ 8} = { 1\over3}$
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Question 432 Marks
Add $\frac{2}{5}$ to $\frac{1}{3}$.
Answer
Here, $LCM$ of $5$ and $3$ is $15$.
Therefore, $\frac{2}{5}+\frac{1}{3}=\frac{2 \times 3}{5 \times 3}+\frac{1 \times 5}{3 \times 5}=\frac{6}{15}+\frac{5}{15}=\frac{11}{15}$
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Question 442 Marks
Subtract $\frac{3}{4}$ from $\frac{5}{6}$
Answer
$LCM$ of $4$ and $6 = 12.$
Therefore, $\frac{5}{6}-\frac{3}{4}=\frac{5 \times 2}{6 \times 2}-\frac{3 \times 3}{4 \times 3}=\frac{10}{12}-\frac{9}{12}=\frac{1}{12}$
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Question 452 Marks
Find the equivalent fraction of $\frac{{15}}{{35}}$ with denominator $7.$
Answer
$\frac{15}{35} =  \frac{15\div5}{35\div5}  = \frac{3}{7}$
Therefore, $\frac{15}{35}$ = $\frac{3}{7}$
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Question 462 Marks
Express the mixed fraction as improper fraction: $5 \frac{3}{7}$
Answer
Here, we have,
$5 \frac{3}{7}=\frac{(5 \times 7)+3}{7}=\frac{38}{7}$
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Question 472 Marks
Express the mixed fraction as improper fraction: $7 \frac{1}{9}$
Answer
Here, we have,
$7 \frac{1}{9}=\frac{(7 \times 9)+1}{9}=\frac{64}{9}$
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Question 482 Marks
Express the mixed fraction as improper fraction: $2 \frac{3}{4}$
Answer
Here, we have,
$2 \frac{3}{4}=2+\frac{3}{4}=\frac{2 \times 4}{4}+\frac{3}{4}=\frac{11}{4}$
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Question 492 Marks
Find: $4 \frac{2}{5}-2 \frac{1}{5}$
Answer
Here, we hvae,
$4 \frac{2}{5}-2 \frac{1}{5}=(4-2)+\left(\frac{2}{5}-\frac{1}{5}\right)=2+\frac{1}{5}=2 \frac{1}{5}$
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Question 502 Marks
Simplify: $\frac{3}{5}-\frac{7}{20}$
Answer
Here, $LCM$ of $5$ and $20$ is $20.$
Therefore, $\frac{3}{5}-\frac{7}{20}=\frac{3 \times 4}{5 \times 4}-\frac{7}{20}=\frac{12}{20}-\frac{7}{20}$
$= \frac{12-7}{20}=\frac{5}{20}=\frac{1}{4}$
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