Haryana State Board HBSE 7th Class Maths Solutions Chapter 2 Fractions and Decimals InText Questions and Answers.
Haryana Board 7th Class Maths Solutions Chapter 2 Fractions and Decimals InText Questions
Try These (Page 34):
Question 1.
If the product is an improper fraction express it as a mixed fraction.
Find
(a) \(\frac{2}{7}\) x 3
(b) \(\frac{9}{7}\) x 6
(c) 3 x \(\frac{1}{8}\)
(d) \(\frac{13}{11}\) x 6
Solution:
Question 2.
Represent pictorially : 2 x \(\frac{2}{5}=\frac{4}{5}\)
Solution:
Try These (Page 34):
Question 1.
Find
(i) 5 x 2\(\frac{3}{7}\)
(ii) 1\(\frac{4}{9}\) x 6
Solution:
Try These (Page 35):
Question 1.
Can you tell, what is
(i) \(\frac{1}{2}\) of 10 = ?
(ii) \(\frac{1}{4}\) of 16 = ?
(iii) \(\frac{2}{5}\) of 25 = ?
Solution:
(i) \(\frac{1}{2}\) of 10 = 5
(ii) \(\frac{1}{4}\) of 16 = 4
(iii) \(\frac{2}{5}\) of 25 = 2 x 5 = 10
Try These (Page 39):
Question 1.
Fill in these boxes :
Solution:
Try These (Page 40):
Question 1.
Find
(i) \(\frac{1 \times 4}{3 \times 5}\)
(ii) \(\frac{2 \times 1}{3 \times 5}\)
Solution:
(i) \(\frac{1 \times 4}{3 \times 5}=\frac{4}{15}\)
(ii) \(\frac{2 \times 1}{3 \times 5}=\frac{2}{15}\)
Try These (Page 40):
Question 1.
Find
(i) \(\frac{8}{3} \times \frac{4}{7}\)
(ii) \(\frac{3}{4} \times \frac{2}{3}\)
Solution:
(i) \(\frac{8 \times 4}{3 \times 7}=\frac{32}{21}\)
(ii) \(\frac{3 \times 2}{4 \times 3}=\frac{2}{4}=\frac{1}{2}\)
Try These (Page 45):
Question 1.
Find
(i) 7 ÷ \(\frac{2}{5}\)
(ii) 6 ÷ \(\frac{4}{7}\)
(iii) 2 ÷ \(\frac{8}{9}\)
Solution:
Try These (Page 45):
Question 1.
Find
(i) 6 ÷ 5\(\frac{1}{3}\)
(ii) 7 ÷ 2\(\frac{4}{7}\)
Solution:
(i) \(\frac{6}{1} \div \frac{16}{3}=\frac{6}{1} \times \frac{3}{16}=\frac{3 \times 3}{1 \times 8}=\frac{9}{8}\)
(ii) \(7 \div \frac{18}{7}=7 \times \frac{7}{18}=\frac{49}{18}\)
Try These (Page 45):
Question 1.
Find
Solution:
Try These (Page 46):
Question 1.
Look at the following table and fill up the blank spaces :
Using this table you can write a decimal number in its expanded form also. For example 253.417
= 2 x 100 + 5 x 10 + 3 x 1 + 4 x (\(\frac{1}{10}\)) + 1 x (\(\frac{1}{100}\)) + 7 x (\(\frac{1}{1000}\)). So, a decimaln number and its expanded form can be written if the place values of the digits are known to us.
Solution:
Try These (Page 50):
Question 1.
1. Find: (i) 2.7×4
(ii) 1.8 x 1.2
(iii) 2.3 x 4.35
2. Arrange the products obtained in (1) in descending order.
Solution:
1.(i) 2.7 x 4 = 10.8
(ii) 1.8 x 1.2 = 2.16
(iii) 2.3 x 4.35 = 10.005
2. 10.8 > 10.005 > 2.16.
Try These (Page 51):
Question 1.
Find :
(i) 0.3 x 10
(ii) 1.2 x 100
(iii) 56.3 x 1000
Solution:
(i) 0.3 x 10 = 3
(ii) 1.2 x 100 = 120
(iii) 56.3 x 1000 = 56300
Try These (Page 53):
Question 1.
Find :
(i) 235.4 ÷ 10
(ii) 235.4 ÷ 100
(iii) 235.4 ÷ 1000
Solution:
(i) \(\frac{235.4}{10}\)= 23.54
(ii) \(\frac{235.4}{100}\) = 2.354
(iii) \(\frac{235.4}{1000}\) = 0.2354
Try These (Page 53):
Question 1.
Find : (i) 35.7 ÷ 3 = ?
(ii) 25.5 ÷ 3 = ?
Solution:
(i) 35.7 ÷ 3 = 11.9,
(ii) 25.5 ÷ 3 = 8.5
Try These (Page 53):
Question 1.
Find : (i) 43.15 ÷ 5 = ?
(ii) 82.44 ÷ 6 = ?
Solution:
(i) 43.15 ÷ 5 = 8.63,
(ii) 82.44 ÷ 6 = 13.74
Try These (Page 53):
Question 1.
Find : (i) 15.5 ÷ 5 (ii) 126.35 ÷ 7
Solution:
(i) \(\frac{15.5}{5}\) = 3.1
(ii) \(\frac{126.35}{7}\) = 18.05
Try These (Page 54):
Question 1.
Find
(i) \(\frac{7.75}{0.25}\)
(ii) \(\frac{42.8}{0.02}\)
(iii) \(\frac{5.6}{1.4}\)
Solution:
(i) \(\frac{7.75}{0.25}=\frac{775}{25}\) = 31
(ii) \(\frac{42.8}{0.02}=\frac{4280}{2}\) = 2140
(iii) \(\frac{5.6}{1.4}=\frac{56}{14}\) = 4