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Exercise 13.3
1. Express one following numbers in standard form
(i) 5,273,294 = 5.273294 x 10^6
(ii) 7,10,021 = 7.10021 x 10^6
(iii) 6,400,000 = 6.4 x 10^6
(iv) 18,129 = 1.8129 x 10^4
(v) 23961,32 = 2.396132 x 10^4
(vi) 75,000,000,000 = 7.5 x 10^10
(vii) 70,010,000,000 = 7.001 x 10^10
(viii) 450269 = 4.50269 x 10^5
(ix) 3206.19 = 3.20619 x 10^3
(x) 475000000000 = 4.75 x 10^11
2. Express the numbers in following statement in standard form
(i) Radius of Moon 1737.1 km = 1.7371 x 10^3 km
(ii) Radius of Earth 6771000 m = 6.771 x 10^6 m
(iii) Distance between Mercury and Venus 50,290,000 km = 5.029 x 10^7 km
(iv) Distance between Mercury and Jupiter 720,420,000 km = 7.2042 x 10^8 km
(v) 1 light year = 9,460,700,000,000 km = 9.4607 x 10^12 km
(vi) 1 Nautical Unit (AU)=149,600,000 km = 1.496 x 10^8 km
(vii) Mass of Moon 73490,000,000,000,000,000,000 km = 7.349 x 10^22 km
(viii) Radius of Sun 695510 km = 6.9551 x 10^5 km
(ix) There is 1,386,000,000 cubic Kilometer sea water on Earth = 1.386 x 10^9 km^3
(x) Speed of light in Vacuum 299,792,458 meter/second (approx 300,000,000 meter/second) = 3 x 10^8 m/s
3. Compare (which one is greater)
(i) 57610000000000000; 576000000000000000
57610000000000000 is greater
(ii) 343.6 x 10^19; 03436 x 10^17
343.6 x 10^19 is greater
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