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Looking at Indices
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| Submitted: Wed Aug 20 2003
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Maths AS GURU P1 ALGEBRA Looking at Indices The manner in which we count is based on the number of fingers (digits) that we have. Our number system is the product of centuries of development . The symbols originated with the Hindus and the name from the Romans. Decimal, means tenth or tithe. The numbers are put together so that the position of any particular digit in a whole number represents its value multiplied by 10, 100, 1000, etc. 6 × 100 + 5 × 10 + 7 × 1 = 657 These multiples of ten can often be written more conveniently as 10, 102, 103, etc. Ten is called the base and the small number above and to the right is called the index (when there are several, the word is indices). 2873 = 2 × 1000 + 8 × 100 + 7 × 10 + 3 × 1 2 × 103 + 8 × 102 + 7 × 101...
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