- General Math
- Sequences, Series and Patterns
- Algebraic Expressions and Equations
- General Math
Define x @ y as (x3 − y)/x, for distinct positive integers x and y. What is the value of 5 @ 10? Evaluating 5 @ 10 yields (53 − 10)/5 = (125 − 10)/5 = 115/5 = 23. Define a # b as a2 − b2 − ab, for...
- Algebraic Expressions and Equations
- Problem Solving (Misc.)
- Sequences, Series and Patterns
Final exams often accompany the final days of school. Sherry has had four tests so far in her science class, each worth 1/6 of her final grade. She scored 87%, 89%, 92% and 91% on these tests. Her...
- Plane Geometry
- Proportional Reasoning
Video by Art of Problem Solving's Richard Rusczyk.
- Plane Geometry
- Proportional Reasoning
Video by Art of Problem Solving's Richard Rusczyk.
- Measurement
Finalist in the 2017-2018 Math Video Challenge. This video was created by Salk School of Science.