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
1000.12Looping Paths
1000.46Line Fragments no. 2
1000.61Poison Pills
1000.72Clock Hands, Purple Flashes
1000.75Scott the Painter
1007.21Trace This Network
1027.42Siamese Fighting Fish
1030.21Utility Lines
1060.11Disappearing Toothpick Squares
1060.41Moving Toothpicks
1070.13The Snail in the Well
1090.35Cube View 2
1090.37Cube Identification
1095.11What Lies Opposite?
1095.12The Checker-Boarded Face
1110.22Around the Corners
1140.11Two Pails and a Duck
1160.31Product Places
1160.32Multiplication Puzzle
1170.21Money Bag
1170.23Yearbook Earnings
1170.24Dimes and Pennies
1170.42Can't Change a Dollar Bill
1170.91Path of Quarters
1170.92A Ton of Pennies
1170.93The Weight of 1000 Dollars in Dimes
1170.94Total Tree Growth
1180.22Horse Trading
1180.35Flutists and Violinists
1180.42Chain Links
1180.62Robins Here and There
1220.11Five Houses, a Camel, and Lemonade
1230.11Baseballs and Grapefruit
1230.22Train Crew
1230.32Blue, White, and Gray
1230.34Super-Duper Market
1230.42Who is Going with Whom?
1230.46Tina's Trip
1230.51Playing Cards to Identify
1230.52Spirit Week Bake Sale Booth
1260.01Handshakes (24, 1)
1260.02Handshakes (n)
1290.11Ice Cream Survey
1300.11Mystery Number
1307.12Four Consecutive Integers
1307.31Consecutive Integers, Sum of 100
1310.11Evens Minus Odds
1310.31Resupplying the International Space Station
1310.41Dartboard with a Black Hole
1310.61Never 100
1322.14Chinese Remainders
1330.11Square Mistake!
1331.12Louie's Age
1334.11Square and Cube
1340.52Pocket Change
1368.25Egyptian Fractions Intro
1368.31What's That Fraction?
1370.11Gain Versus Loss
1410.11How Many Digits?
1460.21Target Products
1470.12Tearing and Stacking
1470.41A Giant Sum
1470.51Heartbeats per Month
1470.52Heart Beats
1470.53Dripping Faucet
1470.54A Million Drops of Water
1480.11Repeating Digits in Addition
1480.21A Large Multiple of 17
1480.41Broken $\surd$ Key
1490.16Buying Sand
1510.11Heap: An Egyptian Equation
1510.22Pebble's Long Life
1510.41Alex Watt's Will
1510.51Stella's Musical Scores
1530.35Mr. Eby's Spare Tire
1540.36Conquest of Bread
1540.51Electric Bill Printing
1540.61Tape Sale
1540.72Waterbed Weight
1550.11Shelley, Veronica, Christy, and Ruth
1550.15Rooster, Goose, Duck Prices
1550.16Harnessing Horses
1550.19Wrestlers on the Scale
1550.21Speeding Cycles
1550.23Batting Average no. 1
1550.29Restaurant Bill
1550.32Eggs to Carry
1550.41Cows and Oxen
1640.61The Largest What! The Smallest What!
1650.12Jasper's Marbles
1650.13Wok Around the Clock
1650.21Dorothy and the Eggs
1720.51Maximum Product
2020.11Expand That Binomial!
2050.44Parentheses Insert
2070.83Bowling Uphill
2100.32Sums of Odd Numbers
2452.14Math Team Average Weight
2460.11Angela's Age
2470.11Backlot Books
2470.31Jellybean Profits
2480.51Trading Marbles
3050.11Fireman on the Ladder
3405.31Pumpkin Patch
3420.11Half a Square Foot
3440.61Design for a Pendant
3650.11Peanut Butter Pricing
3650.13A Solid Cube of Bricks?