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Prealgebra
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Intermediate Algebra
| Status | Title | Difficulty |
| 1221. Apples Multiple Puzzle | Level 4 | |
| 1222. Odd Power Units Digit | Level 3 | |
| 1223. Base 7 Subtraction 2 | Level 3 | |
| 1224. Base 10 Multiple of 11 | Level 1 | |
| 1225. Base 8 Squared Digit | Level 4 | |
| 1226. Prime Factorization Exponent | Level 4 | |
| 1227. Favorite Number Remainder | Level 1 | |
| 1228. Divisor Product Puzzle | Level 5 | |
| 1229. Even Number Product Digit | Level 4 | |
| 1230. Odd Factorial Sum Digit | Level 5 | |
| 1231. Decimal Fraction Digit | Level 2 | |
| 1232. Sum of Digit Powers | Level 4 | |
| 1233. Multiples of 3 Sum | Level 5 | |
| 1234. Modular Inverse Sum 1 | Level 4 | |
| 1235. Base 5 Division | Level 4 | |
| 1236. Power of 5 Modulo | Level 4 | |
| 1237. Base Conversion 5 | Level 4 | |
| 1238. Smallest Congruence Solution | Level 5 | |
| 1239. Ones Digit of Power | Level 3 | |
| 1240. Divisibility by 365 | Level 3 |