EXERCISE 2B 1. Write each of the following numbers in standard form:
(i) 57.36
(ii) 3500000
(iii) 273000
(iv) 168000000
(v) 4630000000000 (vi) 345x105
2. Write each of the following numbers in usual form:
(1) 3.74x10
(ii) 6.912 x 10
(II) 4.1253x107
(iv) 2.5 x 10
(v) 5.17x10
(vi) 1.679x109
3.
(i) The height of Mount Everest is 8848 m. Write it in standard form.
(ii) The speed of light is 300000000 m/sec. Express it in standard form.
(iii) The distance from the earth to the sun is 149600000000 m. Write it in standard form
4. Mass of earth is (5.97 x1024) kg and mass of moon is (7.35 x 102 kg. What is the total mass
of the two?
Hint. Total mass={(5.97x102 1022 + (7.35 x 1022,1 kg
= 11597x1022) +(7.35x1022 kg = [(597 +7.35)> 102-1 kg.
5. Write each of the following numbers in standard form:
(i) 0.0006
(ii) 0.00000083
(iii) 0.0000000534
(iv) 0.0027
(v) 0.00000165
(vi) 0.00000000689
1
6. (1) 1 micron =
m. Express it in standard form.
1000000
(ii) Size of a bacteria = 0.0000004 m. Express it in standard form.
(iii) Thickness of a paper = 0.03 mm. Express it in standard fori.
7. Write each of the following numbers in usual form:
(1) 2.06x10
-5
(ii) 5x10-7
(iii) 6.82 x 10-6
(iv) 5.673x10
(v) 1.8 x 10-2
(vi) 4.129x10-0
(i) 57.36
(ii) 3500000
(iii) 273000
(iv) 168000000
(v) 4630000000000 (vi) 345x105
2. Write each of the following numbers in usual form:
(1) 3.74x10
(ii) 6.912 x 10
(II) 4.1253x107
(iv) 2.5 x 10
(v) 5.17x10
(vi) 1.679x109
3.
(i) The height of Mount Everest is 8848 m. Write it in standard form.
(ii) The speed of light is 300000000 m/sec. Express it in standard form.
(iii) The distance from the earth to the sun is 149600000000 m. Write it in standard form
4. Mass of earth is (5.97 x1024) kg and mass of moon is (7.35 x 102 kg. What is the total mass
of the two?
Hint. Total mass={(5.97x102 1022 + (7.35 x 1022,1 kg
= 11597x1022) +(7.35x1022 kg = [(597 +7.35)> 102-1 kg.
5. Write each of the following numbers in standard form:
(i) 0.0006
(ii) 0.00000083
(iii) 0.0000000534
(iv) 0.0027
(v) 0.00000165
(vi) 0.00000000689
1
6. (1) 1 micron =
m. Express it in standard form.
1000000
(ii) Size of a bacteria = 0.0000004 m. Express it in standard form.
(iii) Thickness of a paper = 0.03 mm. Express it in standard fori.
7. Write each of the following numbers in usual form:
(1) 2.06x10
-5
(ii) 5x10-7
(iii) 6.82 x 10-6
(iv) 5.673x10
(v) 1.8 x 10-2
(vi) 4.129x10-0
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