1000.14 | Un-Knotting |
1000.23 | Floor Tile Reflection no. 3 |
1000.56 | Yearbooks Meet Bookworm |
1000.92 | Students Change Seats |
1010.42 | More Sequences of Squares |
1020.44 | Dividing the Yin and the Yang |
1040.31 | Moving a Circle |
1050.61 | The Rolling Penny |
1070.11 | Limerick |
1070.23 | State a Theorem |
1090.25 | Bohemian Chain Mail |
1090.26 | Equitable Cake Cutting |
1090.31 | Mixed Sticks |
1090.51 | Stark, Raving Bonkers |
1090.72 | Cube, Orange, Made and Unmade |
1090.91 | The Pierced Cube |
1090.93 | The Six-Cubed Thing |
1090.94 | The L-shaped Block |
1180.21 | Missing Dollar |
1180.36 | Restaurant Staff Puzzle |
1190.34 | Kant's Clock |
1190.52 | Day Before Yesterday |
1210.21 | Cheerleader Tryout |
1230.33 | Four Athletes |
1230.36 | Tennis-Playing Family |
1230.61 | Amy, Brenda, Christa, Dana |
1240.12 | Four Men, Two Boys, and a Boat |
1270.13 | Globs and Glitches |
1365.11 | Decimals On Screen |
1490.12 | The Number One First Class Happy Bank |
1510.52 | Totem Pole |
1540.35 | Apples on a Hike |
1540.37 | Celeste in Obieland |
1550.36 | Splitting up Eighty-Eight |
1680.11 | Factorial Perfect Squares? |
1720.11 | TTT |
1730.31 | Counter-Factual Theory |
2050.21 | Four Fours: One to Twenty |
2050.22 | Four 4’s: 21 – 40 |
2070.12 | Formula for Apple Fritters |
2110.34 | Three Numbers |
2122.11 | Factoring a Cubic |
2122.14 | Divisibility by 16 |
2200.21 | An Equation with Fractions |
2210.21 | Inequality |
2210.41 | Distance on the Number Line |
2230.11 | DON'T GUESS! |
2230.63 | Almost Equal Roots |
2230.81 | Cathy the Cat Burglar |
2250.11 | A Nice Rational Equation |
2260.31 | Outrageous Cube Root |
2260.41 | Two Cubes |
2410.12 | Spend or Save? |
2410.23 | Igor's Foul Shots |
2410.33 | Battling Percentages |
2420.21 | Horses and Oats |
2420.31 | Watering Your Venus Flytrap |
2420.51 | Glenice Burns her Candles |
2420.62 | Brick Wall |
2430.11 | Three Valves |
2440.21 | Duckburg to Possumtown |
2440.52 | Wilbur's Boat Trip |
2440.62 | Bike Ride to Oberlin |
2440.71 | Uther and Eethyl |
2440.74 | Fly Between Trains |
2440.75 | Around the Reservoir |
2440.77 | Barnabas and the Overpass |
2440.79 | There's a Train in that Tunnel |
2452.12 | Doctors and Lawyers Play Dodgeball |
2452.33 | Batting Average no. 2 |
2454.11 | How Mean? |
2465.11 | The Luxury Yacht Gemini |
2465.21 | Stephanie and Bonnie's Ages |
2465.99 | The Rope |
2470.52 | Teapot Trade |
2500.12 | Stationery |
2544.11 | Function as Average |
2580.11 | Big f(x), Find f(6) |
2580.51 | A Hard Functional Equation |
2580.61 | Sequence Formula |
2615.11 | A Mystery Function |
2660.11 | Imaginary Roots |
2680.11 | Cubic to Quadratic to Linear |
2702.11 | Add'Em Up |
2720.11 | Minimizing the Sum of Distances |
2730.32 | Nothing but Logs |
2730.33 | Love Those Logarithms |
2730.39 | Complicated Log Equation |
2740.11 | Relating Two Logs |
2740.38 | Find k (logarithms) |
2761.13 | A Tantalizing Trapezoid |
2770.51 | Moving Line |
2784.11 | Big Stone Arch |
2850.48 | Continue the Sequences |
2850.49 | Continue the Sequence |
2850.61 | 1, 2, 2, 1, 1, 2, 1, 2, 2 . . . |
2860.11 | Integer Sum of Unknown Length! |
2860.41 | Fraction Pattern |
2860.61 | Arithmetic Sequence I |
2870.21 | A Mixed Geometric and Arithmetic Sequence |
2890.11 | Fibonacci Numbers Mod 11 |
3080.31 | Seventeen Opinionated People |
3155.21 | Jasmine and Biscuit |
3155.51 | A Narrow Sinister Alley |
3232.11 | Triangle-ing |
3305.11 | Diagonals of Two Regular Polygons |
3310.11 | Sum of Interior Angles |
3340.12 | Trapezoid Angle Measure |
3360.22 | City Hall Tile Floor |
3410.32 | Squares Make An Octagon |
3415.11 | The Square Community Garden |
3420.42 | Cake-Cutting |
3420.43 | Regular Triangle, Regular Hexagon |
3440.43 | Fencing Inside a Circular Field |
3440.62 | Area of an Axe Head |
3470.21 | Distance in flight |
3470.51 | A Triangle in a Circle |
3470.61 | Barber Pole |
3500.31 | Circle Around Three Squares |
3500.63 | Four Tangent Circles |
3550.24 | Put Your Hands Together |
3550.44 | Walking the Equator |
3615.51 | Parallelepiped |
3650.15 | Pouring Water |
3650.23 | Big Rectangular Solid |
3650.41 | Pouring Between Glasses |
3680.21 | Grasshopper Jump |
3721.11 | Symmetric Lines |
3750.72 | Subsistence Allowance |
3750.73 | Mongoes, Booms, and Flems |
3850.11 | Rhombi, Locus of Vertex |
3850.12 | The Caged Triangle |
4040.11 | When Does sin(x) = x/100? |
4050.11 | Angles in a Special Triangle |
4100.11 | Compound Fraction: Trig |
4100.22 | Cosine of Three |
4140.11 | Find the Circumference |
4200.21 | A New Volcano |
4200.23 | The Yacht Gemini on the Hudson |
4200.24 | Rocket Launch |
4200.25 | Sighting an Airplane |
4200.27 | The Top of the Turbine |
4220.11 | View to the Horizon |
4220.21 | Circumnavigating the Earth by Plane |
4400.11 | Knowing the Shot |