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
1160.12ALAS LASS part 2
1307.11Consecutive Integers Sum
1331.11Guess My Age!
1380.11Some Sums
1395.21Radical in Radical
1490.12The Number One First Class Happy Bank
1540.35Apples on a Hike
1550.26Brick on a 2-Pan Scale
1550.27Mr. Adams's Will
1550.28Swerve's Bikes and Skateboards
1550.33Basketball Game Tickets
1550.42Pythagoras Party
1730.41Need More Money?
2070.12Formula for Apple Fritters
2070.14Ghanaian Shirts
2070.33A Rectangular Box
2070.41Stacking Grapefruit
2070.51Square of Dates
2070.71Next Perfect Square
2070.84Particle Motion
2100.33Sum of Odd Numbers
2100.35Fiddling with Exponents
2110.11Big Product
2122.15Pairs of Integers
2150.11Difference of Reciprocals
2150.22Diminished by a Reciprocal
2150.81A Horrendous Quantity
2180.11Real-valued Radical
2200.61Holstein or Guernsey?
2210.32Fractional Inequality
2220.11Timbuktu Post Office
2230.31A Circle and a Parabola
2230.32A Quadratic Question
2230.41Find the Smallest Root
2230.51Jessamine Bush
2230.62Two Quadratics
2240.11A Butterfly Garden
2290.11The Dutch Miller
2300.11Exponential Equation With Threes
2310.11Fleet Street Market
2310.21Coffee Break
2310.31Intersecting Lines
2315.11Equations with No Solution
2405.24Translation into Algebra
2410.13Bertha's Tax
2410.21Tennis Team
2410.23Igor's Foul Shots
2410.33Battling Percentages
2410.42Pompeii Geothermal Corp. Wages
2420.21Horses and Oats
2420.31Watering Your Venus Flytrap
2420.34Emptying the Swimming Pool
2420.41The Cow, the Goat, and the Wildebeest
2420.51Glenice Burns her Candles
2420.62Brick Wall
2440.11Beef's Lost Loot
2440.13Driving to Nirvana
2440.21Duckburg to Possumtown
2440.31Columbus to Cincinnati
2440.33Susu the Cat
2440.41York to London
2440.51Race to the Bus
2440.62Bike Ride to Oberlin
2440.70Snow Tires Versus Ordinary Tires
2440.71Uther and Eethyl
2440.74Fly Between Trains
2440.75Around the Reservoir
2440.78Figure Eight Racing
2440.79There's a Train in that Tunnel
2442.52Daniel Boone on Plum Creek
2452.12Doctors and Lawyers Play Dodgeball
2452.33Batting Average no. 2
2454.11How Mean?
2460.13Ezzaldeen's Age
2460.15The Year the Old Cow Died
2460.27Jianyi and Dylan's Ages
2460.28Present and Future Ages II
2460.29Present and Future Ages III
2460.31Present and Future Ages III
2460.81An Unlikely Coincidence
2465.31Dorcas Ducat's Age
2465.99The Rope
2470.52Teapot Trade
2470.62Solar Panel
2490.11Supermarket Apples
2490.21Kite Strings
2490.32The Grow'm Good Nursery
2500.21Finding Sides of a Triangle
2500.31Foxes and Owls
2500.41Milly and Molly Make Muffins. So Do Their Mothers!
2500.51Defeating, Then Passing a Bill
2500.61Cows, Sheep, Horses
2500.63Kumquat House Numbers
2500.71Airplane Baggage
2510.31The Add-One-Subtract-One Operation
2530.51Defined Operation 3; Do Composition
2580.22If . . . Then . . .
2590.12Function Graphs
2600.12Postage Function, Using [ ]
2615.11A Mystery Function
2680.11Cubic to Quadratic to Linear
2740.38Find k (logarithms)
2770.21Lines! Intersecting!
2850.51What's The Next Term?
2850.65A Sequence by Subtraction
2860.31Even and Odd Numbered Terms
2860.41Fraction Pattern
2860.51Robot Stones
2860.61Arithmetic Sequence I
3070.11Algebra with Angles
3405.11Seven Rectangles