S.chand publication New Learning Composite mathematics solution of class 7 Chapter 2 Fractions and Decimals Exercise 2H

 Exercise 2H

Question 1

(a) Multiply :

(i) 0.7×10

=7

(ii) 1.9×10

=19

(iii) 23.78×10

=23780

(iv) 0.39×10

=390

(b)

(i) 0.3×100

=5.9

(ii) 1.4×100

=140

(iii) 0.059×100

=5.9

(iv) 65.378×100

=65378

(c)

(i) 0.5×1000

=500

(ii) 1.3×1000

=1300

(iii) 0.83×1000

=830

(iv) 0.9627×1000

=962.7

(d)

(i) 0.089×1000

=89

(ii) 7.0029×100

=700.29

(iii) 6.318×10000

=63180

(iv) 0.1×1000

=100

Question 2

(a)

(i) 1.3÷10

=0.13

(ii) 19.7÷10

=1.97

(iii) 265.3÷10

=26.53

(iv) 0.9÷10

=0.09

(b)

(i) 372÷100

=3.72

(ii) 297.3÷100

=2.973

(iii) 0.9÷100

=0.009

(iv) 2.8÷100

=0.028

(c)

(i) 49.83÷100

=0.4983

(ii) 8÷10000

=0.0008

(iii) 29.56÷10000

=0.002956