Chapter 2 Fractions and Decimals Exercise 2.1


Question 1.
Solution:


Solution:
NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals 2
NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals 3
NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals 4

Question 2.
Arrange the following in descending order:


Solution:
NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals 5
NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals 6

Question 3.
In a “magic square” the sum of number in each row, in each column and along the diagonals is the same. Is this a magic square?


Solution:
NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals 8

Solution:
NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals 9

Question 5.
Find the perimeter of (i) ∆ABE (ii) the rectangle BCDE in this figure. Whose perimeter is greater?
Solution:
(i) Perimeter of ∆ABE
NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals 10
NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals 11
Thus perimeter of ∆ABE is greater than the perimeter of the rectangle BCDE.

Question 6.

Solution:
The width of the picture
NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals 12
Hence, the required width to be trimmed = cm.

Solution:
Let the whole part of the apple be 1.
NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals 13

NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals Ex 2.1 Q1
NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals Ex 2.1 Q1.1
NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals Ex 2.1 Q1.2
NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals Ex 2.1 Q3
NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals Ex 2.1 Q4
NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals Ex 2.1 Q5
NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals Ex 2.1 Q5.1
NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals Ex 2.1 Q6
NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals Ex 2.1 Q7
NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals Ex 2.1 Q8

Chapter 2 Fractions and Decimals Exercise 2.1