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Prealgebra
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Intermediate Algebra
| Status | Title | Difficulty |
| 1901. Inverse Tangent Identity | Level 5 | |
| 1902. Acute Angles Cosine | Level 2 | |
| 1903. Triangle Tan Calculation | Level 3 | |
| 1904. Function Range Determination 1 | Level 3 | |
| 1905. Radical Cosine Equation | Level 5 | |
| 1906. Cosine Degree Floor | Level 4 | |
| 1907. Cosecant of Negative Angle | Level 1 | |
| 1908. Arctan Equation Solutions | Level 3 | |
| 1909. Cotangent of 90 Degrees | Level 1 | |
| 1910. Matrix Determinant Calculation 2 | Level 3 | |
| 1911. Line Parameterizations Validity | Level 4 | |
| 1912. Trigonometric Equation Solutions 5 | Level 5 | |
| 1913. Cotangent of 3pi | Level 1 | |
| 1914. Spherical Coordinate Tangent | Level 3 | |
| 1915. Cosine Sine Sum Ratio | Level 4 | |
| 1916. Matrix Norm Inequality | Level 5 | |
| 1917. Logarithmic Equation Solution 1 | Level 3 | |
| 1918. Sum of Tangents | Level 5 | |
| 1919. Point Rotation Coordinates | Level 3 | |
| 1920. Sine Cosine Ratio Sum | Level 2 |