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
1000.21Floor Tile Reflection no. 1
1000.22Floor Tile Reflection no. 2
1000.23Floor Tile Reflection no. 3
1000.41Non-Intersecting Paths on Grid
1090.33Cube Patterns
1090.35Cube View 2
1100.52The Flu
1100.71Martha the Grocer and her Two-Pan Scale
1180.81Horse Race
1210.21Cheerleader Tryout
1230.52Spirit Week Bake Sale Booth
1380.31Find the falsehood
1470.53Dripping Faucet
1540.36Conquest of Bread
1550.21Speeding Cycles
1550.42Pythagoras Party
2211.11Absolutely Unequal
2220.11Timbuktu Post Office
2410.42Pompeii Geothermal Corp. Wages
2440.62Bike Ride to Oberlin
2442.52Daniel Boone on Plum Creek
2470.62Solar Panel
2480.51Trading Marbles
2530.52Defined Operation 4; Do Composition
2530.73Strange Salary
2580.61Sequence Formula
2720.11Minimizing the Sum of Distances
2770.31Trisection Points
2784.11Big Stone Arch
3310.11Sum of Interior Angles
3360.21Rectangle Decomposition
3440.51Fraction of a Circular Area
3650.31Volume and Surface Area of a Cube
3750.31Yobs, Blobs, and Slobs
3750.74Toxic Tangles