Dimensions Math 3A Workbook

The Dimensions Math 3A Workbook provides 202 pages of independent practice covering the first semester of third grade mathematics. Seven chapters progress through numbers to 10,000 (place value, comparing, rounding), addition and subtraction with regrouping and estimation, multiplication and division fundamentals, and graphs and tables. Each lesson corresponds directly to material in the Dimensions Math 3A Textbook (sold separately), following Singapore Math's approach of building deep conceptual understanding before procedural fluency.

Workbook problems are organized into four distinct sections that increase in complexity: Basics reinforces core concepts from textbook lessons, Practice provides additional skill-building exercises, Challenge offers enrichment problems for students ready to extend their thinking, and Check sections allow students to self-assess their understanding. This differentiated structure means students work at their own pace, and not every student needs to complete every problem. Teachers can adjust assignments based on individual progress and homework load concerns.

The workbook arrives as a grayscale, soft-cover book (not perforated, unlike the PK-2 editions) and does not include an answer key. Students may arrive at correct answers using different methods than those shown in the Teacher's Guide—the curriculum intentionally encourages varied mathematical thinking and accepts all valid solution strategies.