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Unformatted text preview: Converting Recurring Decimals into Fractions e.g.( ) 0.6 i & 0.666666 = K let 0.6 x = & 0.666666 x = K 10 6.666666 x = K 9 6 x = 6 9 x = 2 0.6 3 = & ( ) 0.81 ii & & 0.818181 = K let 0.81 x = & & 0.818181 x = K 100 81.818181 x = K 99 81 x = 81 99 x = 9 0.81 11 = & & ( ) 0.327 iii & & 0.3272727 = K let 0.327 x = & & 0.3272727 x = K 100 32.7272727 x = K 99 32.4 x = 32.4 324 99 990 x = = 18 0.327 55 = & & Alternatively: e.g.( ) 0.6 i & 6 = 9 2 3 = 6 is recurring 1 number recurring, use 9 ( ) 0.81 ii & & 81 = 99 9 11 = 81 is recurring 2 numbers recurring, use 99 ( ) 0.7134 iii & & 7134 9999 = 2378 3333 = ( ) 0.327 iv & & 324 = 990 18 55 = 327 3 ( subtract number not recurring) 2 numbers recurring, 1 not use 990 ( ) 0.1096 v & & 1086 = 9900 181 1650 = 1096 10 2 numbers recurring, 2 not use 9900 Exercise 2A; 2adgj, 3bd, 4ac, 5acegi, 6, 7cdg, 8bdfhj, 9, 10bd, 11ac, 12, 13*, 14*...
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This note was uploaded on 11/09/2011 for the course ECON 131 taught by Professor Dfsfddsf during the Spring '11 term at Université Paris 12  ValdeMarne.
 Spring '11
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