Here's a basic chart showing what's where in this long list of problems. There are two fully detailed lists in the User Guide:  SDS Topics in Alphabetical Order and SDS Topics in Numerical Order.

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

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Stella NumberProblem Title
1000.11Three Shapes, Three Numbers
1000.72Clock Hands, Purple Flashes
1000.91Chessboard Dominoes
1070.12This Man's Father
1090.71Twenty-Seven Little Cubes
1160.12ALAS LASS part 2
1180.21Missing Dollar
1230.32Blue, White, and Gray
1230.47Ant, Bat, Cat
1250.11False Coin no. 1
1307.31Consecutive Integers, Sum of 100
1470.12Tearing and Stacking
1490.21Prom Bands
1540.35Apples on a Hike
1610.12Primes in Product
1650.31Divisibility Theorem (Sum)
2070.71Next Perfect Square
2420.12Hen and a Half, Variables
2452.13Fifty Mycologists
2452.14Math Team Average Weight
2460.11Angela's Age
2490.11Supermarket Apples
2500.71Airplane Baggage
2530.11Defined Operation; Find Formula
2544.11Function as Average
3155.21Jasmine and Biscuit
3500.31Circle Around Three Squares
3500.41Water Pipes Stack
3530.11Diameter of a Circle
3550.21Clock with Revolutionary Bug
3550.23Our Whirling, Twirling, Swirling World
3680.21Grasshopper Jump