Estimation · Difficulty 2/10 · ~30 min
Estimation & Number Sense
- Bound quantities above and below
- Estimate products, quotients, and roots
- Use estimates to eliminate answer choices
Before a competitor computes anything exactly, they know roughly what the answer should be. Estimation is not laziness — it is a guidance system. On the AMC it eliminates answer choices; on the AIME it catches arithmetic slips before they cost you the problem.