Concepts

Picture this: you are staring at a SASMO geometry problem with a dozen points, lines crisscrossing everywhere, and no obvious way in. The clock is ticking. Most students start guessing. But you know b…

You are in the middle of a SASMO practice test. You see a number theory question that asks: “How many integers between 100 and 500 are divisible by 6 but not by 9?” Your first instinct might be to sta…

Every SASMO paper includes at least one sequence problem that looks like a puzzle at first glance. You see numbers like 2, 5, 11, 23, 47 and you know there is a rule hiding inside. That rule is a recu…

Learn how to use answer elimination on SASMO multiple-choice questions, from boundary value testing to parent-led timed drills at home.

Learn the deductive thinking skills SASMO tests and master a step-by-step elimination method for digit sums, number constraints, and logical reasoning.

In a typical SASMO geometry problem, the diagram hides a secret. That secret is symmetry. The moment you spot a line of reflection, a point of rotation, or a pattern that repeats, the problem transfor…

One look at a SASMO geometry problem and your brain might freeze. Lines crisscross, angles hide, and the diagram looks like abstract art. But there is a method that cuts through the chaos. It is calle…

Counting problems show up in nearly every SASMO paper. They ask you to find how many ways something can happen. Often students try to list every possibility by hand, which takes too long and leads to …

If you have ever stared at a prime number problem during a math contest and felt a little lost, you are not alone. Primes seem simple on the surface – just a number divisible only by 1 and itself – bu…