Tab 1: Percents Beyond 100% and Micro-Percents (<1%)
Decompose percents over 100% into 100% + part, or scale down to 1% and take fractions for micro-percents.
Descompón porcentajes mayores a 100% (100% + parte) o divide entre 100 para encontrar 1% y fracciones pequeñas.
★ 150% = 100% + 50% | 0.5% = half of 1%
Challenge 1 of 8
Tab 2: Overestimates vs. Underestimates (Error Analysis)
Explain mathematically whether an estimate is greater than or less than the exact value and justify why.
Determina si una estimación es por exceso (overestimate) o por defecto (underestimate) y justifica la dirección del error.
⚖ Rounding up both percent & whole → Overestimate
Tab 3: Advanced Fraction Benchmarks (Thirds, Sixths, & Eighths)
Connect awkward percentages to exact fractions: 33.3% ≈ 1/3, 66.7% ≈ 2/3, 12.5% = 1/8, 37.5% = 3/8, 16.7% ≈ 1/6.
Usa fracciones compatibles avanzadas como tercios, sextos y octavos para estimar con alta precisión.
🧮 12.5% = 1/8 | 33⅓% = 1/3 | 16⅔% = 1/6
Tab 4: Multi-Step Real-World Scenarios
Apply estimation to smartphone storage allocation, solar home battery storage, restaurant taxes + tips, and retail discounts.
Aplica estimaciones en almacenamiento de teléfonos, baterías solares, propinas y descuentos con múltiples pasos.
📱 Notice & Wonder Storage Problem (Reveal Math)
Tab 5: Challenge Mastery Gauntlet
10 rigorous evaluation questions testing micro-percents, over/under reasoning, fraction compatible numbers, and multi-step decisions.
10 preguntas de nivel avanzado que evalúan todas las habilidades de estimación.
🏆 Earn the Challenge Mastery Badge