000			00289nam a22001457a 4500
003			OSt
005			20251030160714.0
040			_cNNL
041			_aEng
082			_a372.7 _bSu169 2007
245			_aSubtract on a number line
260			_c2007
650			_aMathematics
942			_cCS
999			_c125291 _d125291