Haryana State Board HBSE 7th Class Maths Solutions Chapter 2 Fractions and Decimals Ex 2.1 Textbook Exercise Questions and Answers.
Haryana Board 7th Class Maths Solutions Chapter 2 Fractions and Decimals Exercise 2.1
Question 1.
Solve :
Solution:
Question 2.
Arrange the following in descending order:
(i) \(\frac{2}{9}, \frac{2}{3}, \frac{8}{21}\)
(ii) \(\frac{1}{5}, \frac{3}{7}, \frac{7}{10}\)
Solution:
Question 3.
In a “magic square”, the sum of the numbers in each row, in each column and along the diagonal is the same. Is this a magic square ?
Solution:
Question 4.
A rectangular sheet of paper is 12 \(\frac{1}{2}\)cm long and 10\(\frac{2}{3}\)cm wide. Find its perimeter.
Solution:
Perimeter of a rectangular sheet of paper
Question 5.
Find the perimeters (i) ΔABE (ii) the rectangle BCDE in this figure. Whose perimeter is greater ?
Solution:
(i) Perimeter of ΔABE
= AB + BC + EA
Perimeter of ΔABE is greater than the rectangle BCDE.
Question 6.
Salil wants to put a picture-in a frame. The picture is 7\(\frac{3}{5}\) cm wide. To fit in the frame the picture cannot be more than 7\(\frac{3}{10}\) cm wide. How much should the picture be trimmed ?
Solution:
The picture, should be trimmed
Question 7.
Ritu ate \(\frac{3}{5}\) part of an apple and the remaining apple was eaten by her brother Somu. How much part of the apple did Somu eat ? Who had the larger share 7 By how much ?
Solution:
Ritu ate \(\frac{3}{5}\) part of an apple.
Remaining apple = \(1-\frac{3}{5}=\frac{5-3}{5}=\frac{2}{5}\)
Somu ate \(\frac{2}{5}\) part of an apple \(\frac{3}{5}>\frac{2}{5}\)
Ritu had the larger share,
Now \(\frac{3}{5}-\frac{2}{5}=\frac{3-2}{5}=\frac{1}{5}\)
Question 8.
Michael finished colouring a picture \(\frac{7}{12}\) in hour. Vaibhav finished colouring the same picture in \(\frac{3}{4}\) hour. Who worked longer?
By what fraction was it longer ?
Solution:
Michael finished colouring a pictuie in \(\frac{7}{12}\) hour
Vaibhav finished colouring the same picture in \(\frac{3}{4}\) hour.
