Math worksheet with three challenges focusing on number sequences and pattern recognition.

Challenge 1
23, 25, 27, 29, 31, 33
56, 48, 40, 32, 24, 16
125, 150, 175, 200, 225, 250
73, 68, 63, 58, 53, 48
47, 51, 55, 59, 63, 67
83, 76, 69, 62, 55, 48
59, 62, 65, 68, 71, 74
56, 49, 42, 35, 28, 21
5, 13, 21, 29, 37, 45
120, 117, 114, 111, 108, 105
21, 26, 31, 36, 41, 46
48, 42, 36, 30, 24, 18
19, 28, 37, 46, 55, 64
110, 90, 70, 50, 30, 10
21, 32, 43, 54, 65, 76

Challenge 2
1. 83, 85, 87, 89, 91, 93 Rule: +2
2. -1, -3, -5, -7, -9, -11 Rule: -2
3. 125, 150, 175, 225, 275, 325 Rule: +25, then +50
4. 38, 49, 61, 72, 83, 94 Rule: +11
5. 68, 64, 60, 56, 48, 44 Rule: -4, then -8
6. 325, 350, 375, 400, 450, 475 Rule: +25, then +50
7. -24, -20, -16, -12, -8, -4 Rule: +4
8. -2, -6, -10, -14, -18, -22 Rule: -4
9. 72, 62, 52, 47, 42, 37 Rule: -10, then -5
10. 21, 18, 15, 12, 9, 6 Rule: -3
11. 62, 55, 48, 41, 34, 28, 21 Rule: -7
12. 56, 49, 42, 35, 28, 21 Rule: -7
13. 114, 215, 316, 417, 518, 619, 720 Rule: +101
14. -50, -40, -30, -25, -20, -15 Rule: +10, then +5
15. 68, 57, 46, 35, 24, 13, 2 Rule: -11
16. -5, -10, -15, -20, -25, -30, -35 Rule: -5

Challenge 3
1. 77 83 89 95 101 107 113 Rule: +6
2. -2 -4 -6 -8 -10 -12 -14 Rule: -2
3. 68 77 86 95 104 113 122 Rule: +9
4. 25 20 15 10 5 0 -5 Rule: -5
5. 35 60 85 110 135 160 185 Rule: +25
6. 3 1 -1 -3 -5 -7 -9 Rule: -2
7. 132 121 110 99 88 77 66 Rule: -11
8. 54 62 70 78 86 94 102 Rule: +8
9. 18 14 10 6 2 -2 -6 Rule: -4
10. 48 38 28 18 8 -2 -12 Rule: -10
11. 45 38 31 24 17 10 3 Rule: -7
12. 64 52 40 28 16 4 -8 Rule: -12
13. 5 24 43 62 81 100 119 Rule: +19
14. 19 13 7 1 -5 -11 -17 Rule: -6
15. 48 69 90 111 132 153 174 Rule: +21