Recurring Decimals Rules: 0.0 / 5 ? MathematicsNumberGCSEEdexcel Created by: Former MemberCreated on: 16-04-14 18:26 Single recurring digit rule: 0.555555 = 5/9 (PUT THE DIGIT OVER 9) 1 of 6 Double recurring digit rule: 0.31313131 = 31/99 (PUT THE TWO DIGITS OVER 99) 2 of 6 Treble recurring digit rule: 0.217217 = 217/999 (PUT THE THREE DIGITS OVER 999) 3 of 6 Single digit then single recurring digit rule: 0.57777 = 57-2/90 = 52/90 (1st 2 digits - 1st digit over 90) 4 of 6 Double digit then single recurring digit rule: 0.2744444 = 274-27/900 =247/900 (1st 3 digits - 1st 2 digits over 900) 5 of 6 Single digit then double recurring digit rule: 0.2171717 = 217-2/990 = 215/990 (1st 3 digits - 1st digits over 990) 6 of 6
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