Q3 of 17 Page 263

Express the following numbers in standard form:

(i) 5, 00, 00, 000


(ii) 70, 00, 000


(iii) 3, 18, 65, 00, 000


(iv) 3, 90, 878


(v) 3, 9087.8


(vi) 3908.78

(i) We have to express the given number in standard form:

Thus,


5, 00, 00, 000 = 5 × 107


(ii) We have to express the given number in standard form:


Thus,


70, 00, 000 = 7 × 106


(iii) We have to express the given number in standard form:


Thus,


3, 18, 65, 00, 000 = 3.1865 × 109


(iv) We have to express the given number in standard form:


Thus,


3, 90, 878 = 3.90878 × 105


(v) We have to express the given number in standard form:


Thus,


39087.8 = 3.90878 × 104


(vi) We have to express the given number into standard form:


Thus,


3908.78 = 3.90879 × 103


More from this chapter

All 17 →
5

Simplify:

(i)


(ii)


(iii)

1

Write the following numbers in the expanded forms:

279404, 3006194, 2806196, 120719, 20068

 2

Find the number from each of the following expanded form:

(a) 8 × 104 + 6 × 103 + 0 × 102 + 4 × 101 + 5 × 100


(b) 4 × 105 + 5 × 103 + 3 × 102 + 2 × 100


(c) 3 × 104 + 7 × 102 + 5 × 100


(d) 9 × 105 + 2 × 102 + 3 × 101

 4

Express the number appearing in the following statements in standard form.

(a) The distance between Earth and Moon is 384,000,000 m.


(b) Speed of light in vacuum is 300,000,000 m/s.


(c) Diameter of the Earth is 1,27,56,000 m.


(d) Diameter of the Sun is 1,400,000,000 m.


(e) In a galaxy there are on an average 100,000,000,000 stars.


(f) The universe is estimated to be about 12,000,000,000 years old.


(g) The distance of the Sun form the centre of the Milky Way Galaxy is estimated to be 300,000,000,000,000,000,000 gm.


(h) 60,230, 000,000,000,000,000,000 molecules are contained in a drop of water weighting 1.8 gm.


(i) The earth has 1,353,000,000 cubic km of sea water.


(j) The population of India was about 1,027,000,000 in March, 2001