ML Aggarwal CBSE Solutions Class 7 Math Second Chapter Fractions and Decimals Exercise 2.5

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:


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