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| Summary |
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 A rational number is a number of the form  where p and q are integers and  . |
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Problems involving rational numbers are simplified using 'BODMAS' rule. |
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A rational number can be represented in the decimal form. |
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When a rational number is represented as a decimal, it will be either a terminating decimal or a recurring decimal. |
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A terminating decimal or a recurring decimal can be represented in the form  . |
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All real numbers which are not rational are called irrational numbers. |
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If 'a' is not the nth power of any rational number,  is called a surd. |
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All surds are irrational numbers. |
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Rational numbers and irrational numbers together form the set of real numbers. |
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All rational and irrational numbers can be marked on the number line. |
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Numbers with surds in the denominator are supposed to be simplified by rationalising their denominators. |
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