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Prealgebra
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Precalculus
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Intermediate Algebra
| Status | Title | Difficulty |
| 801. Modular Inverse Calculation 1 | Level 4 | |
| 802. Base 9 to Decimal | Level 2 | |
| 803. Integral Expression Conditions | Level 4 | |
| 804. Factorial Remainder | Level 1 | |
| 805. Prime Factor Sum 2 | Level 4 | |
| 806. Modular Inverse Computation | Level 5 | |
| 807. Base Equation Solution 1 | Level 5 | |
| 808. Simple Modulo Operation | Level 1 | |
| 809. Binary Sum Calculation | Level 3 | |
| 810. Multiplicative Inverse Discovery | Level 5 | |
| 811. Primes and Odds Intersection | Level 2 | |
| 812. Digit Equation Sum | Level 4 | |
| 813. Power Product Digits | Level 5 | |
| 814. Base Conversion Summation | Level 5 | |
| 815. Prime Triple Sum 1 | Level 4 | |
| 816. Decimal Expansion Digit 2 | Level 2 | |
| 817. Modular Inverse Existence | Level 5 | |
| 818. LCM Value Determination | Level 5 | |
| 819. Double Digit Sum Puzzle | Level 2 | |
| 820. Base 6 Subtraction 1 | Level 4 |