Table of Contents

Topic Overview

Here are the thirteen overatching groups of problems that are the backbone of the grandly-named Stella Decimal System (SDS). There are 350 individual topics spread among these groups. Each individual problem has a four-digit call number followed by a two-digit decimal. For example, the problem about planting ten peach trees has Stella number 1040.11.

TopicStella Number
Visual Problems1000 – 1170
Logical Deduction1180 – 1290, 3750
Arithmetic1300 – 2022
Symbol Manipulation2030 – 2390, 2745, 4100
Algebra Problems2400 – 2500
Analytic Geometry2750 – 2840, 3680 – 3723
Informal Geometry3000 – 3080
Euclidean Geometry3100 – 3650, 3750 – 3850
Trigonometry4000 – 4340
Probability4400 – 4420
Table of Contents