Mathematics Problems and Warm-ups

List of all problems

  1. Antifreeze (Solution)
  2. Consecutive Birthdays (Solution)
  3. Cube Numbers (Solution)
  4. Don't Spend It All At Once (Solution)
  5. Hands of a Clock (Solution)
  6. How Old Is My Daughter? (Solution)
  7. The Striking Clock (Solution)
  8. Relations (Solution)
  9. School Notes (Solution)
  10. Simple Algebra (Solution)
  11. A Dinner Party (Solution)
  12. Dominoes on Board (Solution)
  13. An Unusual Series (Solution)
  14. Is the Rope Knotted? (Solution)
  15. The Two Rugs (Solution)
  16. Mexican Table Mats (Solution)
  17. The Curious Sequence (Solution)
  18. Colored Labels (Solution)
  19. War in the Middle Ages (Solution)
  20. How Many Are We? (Solution)
  21. Jaws (Solution)
  22. Meteorology (Solution)
  23. Amateur Doctor (Solution)
  24. Bar Flies (Solution)
  25. Subway Escalator (Solution)
  26. Lighthouse (Solution)
  27. The Demonstration (Solution)
  28. Year of Birth (Solution)
  29. Spanish Arithmetic (Solution)
  30. A Story of 1's and 2's (Solution)
  31. How Many Children Were You? (Solution)
  32. Brother and Sister (Solution)
  33. Ursula and the Cats (Solution)
  34. New Math (Solution)
  35. Chinese Numbers (Solution)
  36. The Smallest Possible (Solution)
  37. For Those Under 16 (Solution)
  38. Product (Solution)
  39. Riverside Drive (Solution)
  40. Summit Meeting (Solution)
  41. A Bag Of Marbles (Solution)
  42. The Five Numbers (Solution)
  43. 100! (Solution)
  44. House of Cards (Solution)
  45. Lunch With Friends (Solution)
  46. Thirty-two Cards (Solution)
  47. Checker Pattern (Solution)
  48. Odd or Even (Solution)
  49. Five Times Five (Solution)
  50. Largest Product (Solution)
  51. Multiple Choice (Solution)
  52. A Square Number (Solution)
  53. Reverse Multiplication (Solution)
  54. Odd Product (Solution)
  55. Carnival Dice (Solution)
  56. Sum Cubes (Solution)
  57. Tower of Squares (Solution)
  58. Sum to 30 (Solution)
  59. The King's Fortune Telling Scale (Solution)
  60. Knights of the Round Table (Solution)
  61. Photographers and Cannibals (Solution)
  62. Handshakes (Solution)
  63. Bookworm (Solution)
  64. Match Game (Solution)
  65. Where There's a Will (Solution)
  66. Rope Trick (Solution)
  67. Alphabet Soup (Solution)
  68. All Wet (Solution)
  69. The Telltale Number (Solution)
  70. Something Fishy (Solution)
  71. The Baffling Bicycle (Solution)
  72. Figure Eight (Solution)
  73. The Balancing Brick (Solution)
  74. The Scrambled Salesman (Solution)
  75. Wrong Number (Solution)
  76. Magic Numbers (Solution)
  77. Case of the Counterfeit Coins (Solution)
  78. Strange Series (Solution)
  79. Boxed In (Solution)
  80. Weighty Question (Solution)
  81. Early Bird (Solution)
  82. Take a Letter (Solution)
  83. Water and Milk (Solution)
  84. Four Sheep (Solution)
  85. Do Helmets Increase Head Injuries? (Solution)
  86. Sons (Solution)
  87. Dinner for Three (Solution)
  88. One Clock (Solution)
  89. The Mongolian Postal Service (Solution)
  90. The Amorous Commuter (Solution)
  91. Short Roads (Solution)
  92. A Weighty Problem I (Solution)
  93. A Weighty Problem II (Solution)
  94. Eight Years Old (Solution)
  95. Cover That Hole (Solution)
  96. Pond Problem (Solution)
  97. River Problem I (Solution)
  98. River Problem II (Solution)
  99. The Bicycles and the Fly (Solution)
  100. Where does the square go? (Solution)
  101. Siblings (Solution)