Fractions and Decimals Class 7 Extra Questions Maths Chapter 2

Extra Questions for Class 7 Maths Chapter 2 Fractions and Decimals

Fractions and Decimals Class 7 Extra Questions Very Short Answer Type

Question 1.
If (frac { 2 }{ 3 }) of a number is 6, find the number.
Solution:
Let x be the required number.

Hence, the required number is 9.

Question 2.
Find the product of (frac { 6 }{ 7 }) and 2(frac { 2 }{ 3 }).
Solution:

Question 3.
Solve the following:

Solution:

Question 4.
Multiply 2.05 and 1.3.
Solution:

Fractions and Decimals Class 7 Extra Questions Short Answer Type

Question 5.
Solve the following:
(a) 3 – (frac { 2 }{ 3 })
(b) 4 + (frac { 2 }{ 5 })
Solution:

Question 6.
Arrange the following in ascending order:

Solution:

Question 7.
Find the products:
(i) 2.4 × 100
(ii) 0.24 × 1000
(iii) 0.024 × 10000
Solution:

Question 8.
Arnav spends 1(frac { 3 }{ 4 }) hours in studies, 2(frac { 1 }{ 2 }) hours in playing cricket. How much time did he spend in all?
Solution:
Time spent by Arnav in studies = 1(frac { 3 }{ 4 }) hours
Time spent by Arnav in playing cricket = 2(frac { 1 }{ 2 }) hours
Total time spent by Arnav = 1(frac { 3 }{ 4 }) hours + 2(frac { 1 }{ 2 }) hours

Question 9.
A square paper sheet has 10(frac { 2 }{ 5 }) cm long side. Find its perimeter and area.
Solution:

Question 10.

Solution:

Question 11.
The product of two numbers is 2.0016. If one of them is 0.72, find the other number.
Solution:
Product of two numbers = 2.0016
One number = 0.72
Other number = 2.0016 ÷ 0.72

Hence, the required number = 2.78.

Question 12.
Reemu reads (frac { 1 }{ 5 })th pages of a book. If she reads further 40 pages, she would have read (frac { 7 }{ 10 })th
page of the book. How many pages are left to be read? [NCERT Exemplar]
Solution:
Let the total number of pages be x.
Number of pages read by Reemu = (frac { 1 }{ 5 })x
If she reads 40 more pages,
Total number of pages read by her = (frac { 1 }{ 5 })x + 40

Question 13.
(frac { 1 }{ 8 }) of a number equals (frac { 2 }{ 5 }) ÷ (frac { 1 }{ 20 }). What is the number? (NCERT Exemplar)
Solution:
Let the number be x.

Hence, the required number = 64.

Question 14.
Simplify the following:

Solution:

Question 15.
The weight of an object on the Moon is (frac { 1 }{ 6 }) its weight on the Earth. If an object weight 5(frac { 3 }{ 5 }) kg on the Earth. How much would it weight on the Moon? [NCERT Exemplar]
Solution:

Question 16.
A picture hall has seats for 820 persons. At a recent film show, one usher guessed it was (frac { 3 }{ 4 }) full, another that it was (frac { 2 }{ 3 }) full. The ticket office reported 648 sales. Which usher (first or second) made the better guess? [NCERT Exemplar]
Solution:
Total number of seats = 820
Number of ticket sold = 648
For first usher = (frac { 3 }{ 4 }) × 648 = 3 × 162 = 486
For second usher = (frac { 2 }{ 3 }) × 648 = 2 × 216 = 432
Since 432 < 486
Hence, the first usher guessed better.

Extra Questions for Class 7 Maths

NCERT Solutions for Class 7 Maths

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