00367nam a2200133 a 450000500170000000800410001702000180005805000270007624500420010326000390014530000090018444000250019350000150021820140412111421.0071129s19uu    xx            00    eng d  a1-55799-919-8  aTR(GS 512.92bSu1 2003  aSubtraction Facts :b2 digit numbers.  aU.S.A :bThe learning line,c2003.  a32p.  aSuccess measures up!  aGrades 2-3