Power Play
Writing the mass of the Earth or the size of a bacterium in full would fill a line with zeroes. Chapter 10, Exponents and Powers, of the NCERT Mathematics textbook for Class 8 introduces powers as a compact language for repeated multiplication. You will apply the laws of exponents to multiply, divide and raise powers, extend the meaning to negative exponents, and express very large and very small numbers in standard scientific form. Examples from astronomy and microbiology show why scientists trust this shorthand.
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