Number Wheel 1–100

About the number wheel 1–100

Spin the wheel to pick a random whole number from 1 to 100, each with exactly a 1% chance. The wheel marks every fifth number (5, 10, 15 … 100) so you can follow the spin, and the winning number pops up clearly when it stops. Turn on "Remove winner" to draw numbers without repeats, like pulling raffle tickets from a hat.

Ways to use it

• Raffles and door prizes with numbered tickets.
• Guess-the-number games in class.
• Pick a random page, question, or seat number.

Why the same number can come up twice

Each spin is independent, so a number that just won is as likely as any other to win again (1 in 100). Repeats also come up sooner than most people expect: in 12 spins there is about a 50% chance that at least one number appears twice, and in 13 spins it is about 56%. If repeats are not allowed, as in a raffle, turn on "Remove winner after each spin".

Running a raffle or giveaway with numbers 1 to 100

Give every entry a number, from ticket stubs to comment order, then spin once per prize with "Remove winner" on. Show the wheel on screen or share your screen so everyone sees the draw. For more than 100 entries, change the range with the "Numbers from" boxes, up to 1,000 numbers.

Number 1 to 100 games for the classroom

Spin a number and ask students to find it on a hundred chart, say the number before and after it, round it to the nearest ten, or split it into tens and ones (64 is 6 tens and 4 ones). Older students can say whether it is odd or even, prime or a square number, or list its factors. Spin twice for a quick addition, subtraction or "which is bigger?" round.

Guess the number: 1 to 100 in 7 guesses

One person spins in secret and the others guess; after each guess the spinner says "higher" or "lower". Always guessing the middle of what is left (50, then 25 or 75, and so on) finds any number from 1 to 100 in at most 7 guesses, because each guess cuts the possibilities in half. It is a fun way to introduce halving and estimation.

The odds for different kinds of numbers

Each number has a 1 in 100 chance. Odd and even numbers each win 50% of the time, a multiple of 10 wins 10% (10, 20 … 100), a square number wins 10% (1, 4, 9 … 100), and a prime number wins 25%, because 25 of the numbers from 1 to 100 are prime. A number from 1 to 50 wins half the time.

What’s on this wheel (100)

1. 1
2. 2
3. 3
4. 4
5. 5
6. 6
7. 7
8. 8
9. 9
10. 10
11. 11
12. 12
13. 13
14. 14
15. 15
16. 16
17. 17
18. 18
19. 19
20. 20
21. 21
22. 22
23. 23
24. 24
25. 25
26. 26
27. 27
28. 28
29. 29
30. 30
31. 31
32. 32
33. 33
34. 34
35. 35
36. 36
37. 37
38. 38
39. 39
40. 40
41. 41
42. 42
43. 43
44. 44
45. 45
46. 46
47. 47
48. 48
49. 49
50. 50
51. 51
52. 52
53. 53
54. 54
55. 55
56. 56
57. 57
58. 58
59. 59
60. 60
61. 61
62. 62
63. 63
64. 64
65. 65
66. 66
67. 67
68. 68
69. 69
70. 70
71. 71
72. 72
73. 73
74. 74
75. 75
76. 76
77. 77
78. 78
79. 79
80. 80
81. 81
82. 82
83. 83
84. 84
85. 85
86. 86
87. 87
88. 88
89. 89
90. 90
91. 91
92. 92
93. 93
94. 94
95. 95
96. 96
97. 97
98. 98
99. 99
100. 100

Frequently asked questions