The population of a town grew by in one year and then by the following year. By what percent did the population grow over the two years?
Get ready for the AMC 8, AMC 10 and AMC 12.
Find your weakest area in a free 12-problem diagnostic, fix it with a short lesson, then sit timed 25-problem practice competitions.
The only interactive course with a tutor that finds your weak spots and fixes them.
One payment in US dollars. Full refund within 14 days, for any reason.
Three competitions, one way to prepare
The AMC 10 and AMC 12 are on November 5 and 13, 2026; the AMC 8 runs January 21 to 27, 2027. In 2027 a score of 100 on the AMC 10 or 85 on the AMC 12 qualifies for the AIME.
| Competition | Format | Scoring | 2026-27 date |
|---|---|---|---|
| AMC 8 | 25 problems, 40 minutes, grade 8 and below | 1 per right answer, out of 25 | January 21 to 27, 2027 |
| AMC 10 | 25 problems, 75 minutes, grade 10 and below | 6 per right answer, 1.5 per blank, out of 150 | November 5 (A) or 13 (B), 2026 |
| AMC 12 | 25 problems, 75 minutes, grade 12 and below | 6 per right answer, 1.5 per blank, out of 150 | November 5 (A) or 13 (B), 2026 |
Five areas, every level
Every problem is labeled AMC 8, AMC 10 or AMC 12 and ranked by difficulty, so a student works at the right level and moves up.
Arithmetic
Ratios, rates, percents, estimation, averages and reading data from tables.
Algebra
Equations and systems, quadratics, functions, sequences and polynomials; logs and complex numbers at AMC 12 level.
Geometry
Triangles, the Pythagorean Theorem, circles, area and volume, coordinates and spatial reasoning; trigonometry at AMC 12 level.
Number theory
Primes, factors, divisor counts, gcd and lcm, remainders, last digits and bases.
Counting and probability
Arrangements, combinations, casework, complements, and probability with equally likely outcomes.
Start with a free 25-minute diagnostic
12 problems from all five areas, no signup. You get your score by area, a short lesson on the weakest one and a study plan.
Try one problem from each area
The graph of , where is a constant, crosses the -axis at . At what other value of does it cross the -axis?
A rectangular garden is meters by meters. Pat walks from one corner to the opposite corner along two sides of the garden. Quinn walks between the same two corners in a straight line across the garden. How many meters shorter is Quinn's walk than Pat's?
What is the units digit of ?
Two fair six-sided dice, each with faces numbered through , are rolled. What is the probability that the two numbers rolled differ by exactly ?
In the course
- 12 interactive lessons
- 150 original practice problems with full solutions
- 4 timed 25-problem practice competitions: two AMC 8, one AMC 10, one AMC 12
Guides
Competition Math Genius Pro
US$39one payment
- 12 interactive lessons
- 150 practice problems
- 4 timed 25-problem practice competitions
Full refund within 14 days. Ask within 14 days of paying, for any reason. Our refund promise still applies after you start the course. The note under the pay button is about the separate legal right to cancel. Terms
Apple Pay, Google Pay or card. Charged in USD.
One payment. No sales tax is added. Access until October 31, 2027.
Questions? support@unigenius.co.uk