Crossword clues for A 1 6 letters:ADDENDEither 1 in "1+1"SERIES1, 1, 2, 3, 5, 8, 13 ..., e.g.CHRISTWord that first appears in Matthew 1:1ITALIA1-Across' country, to a 1-AcrossISSUESVolume 1, Number 1 and othersSHORTEWhat 1-Down has that 1-Across lacksNUMBER1 in a 1,000,000, e.g.SERIES1, 1, 2, 3, 5, 8, 13, 21, 34 ..., e.g.LIONELFirst name of the singer of a 1984 #1 hit with the same title as a 2015 #1 hitLEGENDIt may say "1 inch = 1 mile"AMERIESinger with the 2005 #1 R&B hit "1 Thing"ODDSONLike a 1:2 favorite, but not a 2:1 favoriteGNOTES$1,000 billsLEIDAYMay 1 Hawaiian celebrationPACERSThey're #1ARCADEOriginal milieu of 1 AcrossEDISONAcquirer of more than 1,000 patentsAZALEASouthern Living's "#1 must-have plant"RAGMOP1950 #1 Ames Brothers hitMMMBOP1997 Hanson #1 hitRHONDATitle girl in a 1965 #1 hitELAINEWith 1 Across, Baldwin's mom on "30 Rock"LOONIECanadian $1 coinCAMPUSWhere to see 1 DownLOWBETIt's placed on a 1-to-18 result, in rouletteARABICLike the numerals 1, 2, 3, etc.EMINORKey of Chopin's Piano Concerto No. 1SALARY$1, for many CEOsOROSCOPitcher Jesse with a record 1,252 regular-season appearancesELEVENSee 1-acrossMONKEYWith 1-Across, spend time frivolouslyMANIAC#1 hit song from "Flashdance"PELHAMThe Taking of __ 1 2 3MYSONGSee 1-AcrossNONCOM1-Down, for oneARCTAN_____(1) = pi/4ATTILA#1 HunIMMABE2010 Black Eyed Peas #1 hitHOAGIE1 Across cousinAGASSISecond-youngest after Becker, at the time, to earn $1 million in his sportAFRICA1983 #1 Toto hitPHELPS#1 in all-time Olympic goldSHBOOM1954 hit often considered to be the first rock hit to reach #1 on the pop chartsEMINEMHe had the #1 US album of 2010EXACTA24-Across on a 1-2 finishLETTERSee 1-AcrossPELHAMThe Taking of ___ 1 2 3 (2009 movie)NELSONSee 1-AcrossBESAME___ Mucho (1940s #1 hit)BINARYNumber system that uses only 0 and 1