**TI83F* AppVariable file 03/22/07, 09:59­ œGLM103œšnav BB89E8C391A14EE0A1ECD560CF6CB76EGLM103.GLM1031   clusteringkclustering:ÖAn estimation method in which a group of numbers close in value are rounded to the same number. $expanded form (or expanded notation)‰expanded form (or expanded notation):ÖThe sum of the products of each digit and its place value of a number.ÖExample: Ö867 = 800 + 60 + 7 front-end estimation±front-end estimation:ÖAn estimation method in which the front digits are added or subtracted first, and then the digits in the next place value position are added or subtracted.  standard form1standard form:ÖNumbers written without exponents.ß