|Grade||Total||Number sense, properties, and operations||Measurement||Geometry and spatial sense||Data analysis, statistics, and probability||Algebra and functions|
|† Not applicable. At grade 12, the Geometry and Spatial Sense scale was combined with the Measurement scale before scaling.
NOTE: The numbers in this table represent the post-scaling counts of items.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2005 Mathematics Assessment.