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
1000.61Poison Pills
1000.65An Alphabet Line
1000.81Continue the Pattern
1000.82Acropolis Pattern
1100.11The Old Wooden Disc
1170.91Path of Quarters
1220.11Five Houses, a Camel, and Lemonade
1232.31Six Who Witnessed a Burglary
1250.12False Coin no. 2
1280.11Toad Tales
1310.31Resupplying the International Space Station
1380.11Some Sums
1510.41Alex Watt's Will
1550.18Jacob's Bumper
1550.22In A Dream
2050.21Four Fours: One to Twenty
2110.12Giant Distribution
2110.34Three Numbers
2122.11Factoring a Cubic
2150.22Diminished by a Reciprocal
2300.11Exponential Equation With Threes
2310.21Coffee Break
2410.11A Salesman's Commission
2420.21Horses and Oats
2440.11Beef's Lost Loot
2465.21Stephanie and Bonnie's Ages
2470.11Backlot Books
2530.31Mystery Linear Operation
2760.21Adjacent Corner of a Square
2761.13A Tantalizing Trapezoid
2770.21Lines! Intersecting!
2870.11Levy's Basketball
3405.12Impossible Rectangle?