Transcription of Rational Chapter 9 - NCERT
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Rational Chapter 9 - NCERT
Rational INTRODUCTIONYou began your study of numbers by counting objects around numbers used for this purpose were called counting numbers ornatural numbers. They are 1, 2, 3, 4, .. By including 0 to naturalnumbers, we got the whole numbers, , 0, 1, 2, 3, .. The negativesof natural numbers were then put together with whole numbers to makeup integers. Integers are .., 3, 2, 1, 0, 1, 2, 3, .. We, thus, extendedthe number system, from natural numbers to whole numbers and fromwhole numbers to were also introduced to fractions.
1 2 3, , etc. All fractions are rational numbers. Can you say why? How about the decimal numbers like 0.5, 2.3, etc.? Each of such numbers can be written as an ordinary fraction and, hence, are rational numbers. For example, 0.5 = 5 10, 0.333 = 333 1000 etc. 1. Is the number 2 −3 rational? Think about it. 2. List ten rational numbers ...
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