ML Aggarwal CBSE Solutions Class 7 Math 2nd Chapter Fractions and Decimals Exercise 2.5
(1) Write the following numbers in the expanded form:
(i) 20.03 (ii) 200.03 (iii) 2.034
(2) Write the place value of digit 2 in the following numbers:
(i) 2.56 (ii) 21.37 (iii) 10.25 (iv) 63.352
Solution: 
(3) Convert the following decimal numbers to fractions (in simplest form):
(i) 0.8 (ii) 0.225 (iii) 0.0092 (iv) 3.025
(4) Convert the following to mixed fractions:
(i) 5.05 (ii) 63.125 (iii) 17.075 (iv) 317.0006
(5) Convert the following fractions into decimal fractions:
(i) 0.5 or 0.05 (ii) 7 or 0.7 (iii) 2.03 or 2.30 (iv) 0.8 or 0.88
(6) Which is greater?
(i) 0.5 or 0.05 (ii) 7 or 0.7 (iii) 2.03 or 2.30 (iv) 0.8 or 0.88
(7) Arrange the following decimal numbers in ascending order:
(i) 38.02, 38.021, 3.802, 83.02, 38.002
(ii) 46.542, 46.452, 46.254, 46.05, 64.542, 46.0542
Solution: 
Now arranging into ascending order,
= 46.05, 46.0542, 46.254, 46.452, 46.542, 64.542
(8) Arrange the following decimal numbers in descending order:
(i) 5.6, 0.93, 1.87, 1.9, 1.78, 0.39
(ii) 71.201, 20.1, 2.01, 3.1, 2.14, 0.652
(9) Express as rupees using decimals:
(i) 7 paise (ii) 77 rupees 77 paise (iii) 235 paise
Solution: 
(10) Express 5 cm in metre and kilometre.
(11) Express in kg using decimals:
(i) 200 g (ii) 3470 g (iii) 4 kg 8 g.
(12) Add:
(i) 5.765, 9.2, 3.08 (ii) 15.49, 8.3572, 0.903, 7.8
(13) Workout the following:
(i) 72.53 – 46.782
(ii) 18.376 – 5.43 – 8.8976
(iii) 28.5 – 9.708 – 6.234
(iv) 8.2 – 4.56 – 0.7912 + 2.67
(14) (i) What number added to 3.56 gives 13.016?
(ii) What number should be subtracted from 30 to get 23.709?
(iii) What is the excess of 20.4 over 9.7403?
Solution: 
