Introduction Do you know? Mass of earth is 5,970,000,000,000, 000, 000, 000, 000 kg. We have already learnt in earlier class how to write such large numbers more conveniently using exponents, a
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Powers with Negative Exponents You know that, 102 = 10 × 10 = 100 &
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Laws of Exponents We have learnt that for any non-zero integer a, a m × a n = a m + n , where m and n are natural numbers. Does this law also hold if the exponents are negative? Let us explor
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Use of Exponents to Express Small Numbers in Standard Form Observe the following facts. 1. The distance from the Earth to the Sun is 149,600,000,000 m. 2. The speed of light is 300,000,000
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Comparing very large and very small numbers The diameter of the Sun is 1.4 × 109 m and the diameter of the Earth is 1.2756 × 107 m. Suppose you want to compare the diameter of the E
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