I can estimate the percent of a number using benchmark percents, rounding, and compatible numbers.Puedo estimar el porcentaje de un número usando porcentajes de referencia, el redondeo y números compatibles.
Word bankBanco de palabras 6 words6 palabrasestimate, benchmark percent, compatible numbers, …estimación, porcentaje de referencia, números compatibles, …
- estimateestimación
- An answer that is close, found without exact work.Una respuesta cercana, sin hacer el cálculo exacto.
- benchmark percentporcentaje de referencia
- An easy percent you can find in your head.Un porcentaje fácil que puedes hallar mentalmente.
- compatible numbersnúmeros compatibles
- Numbers near the real ones that are easy to work with.Números cercanos a los reales con los que es fácil calcular.
- double number linerecta numérica doble
- Two number lines side by side. Marks that line up go together.Dos rectas numéricas juntas. Las marcas que coinciden van juntas.
- the wholeel total
- The full amount. It counts as 100%.La cantidad completa. Cuenta como 100%.
- DecomposeDescomponer
- Break a number or shape into smaller parts.Separar un número o una figura en partes más pequeñas.
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.
Tab 2: Overestimates vs. Underestimates (Error Analysis)
Explain mathematically whether an estimate is greater than or less than the exact value and justify why.
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.
Tab 4: Real-World Estimation Stories
Estimate a percent of a number in real stories: phone storage, batteries, tips, sales, miles, and water.
Tab 5: Challenge Mastery Gauntlet
10 rigorous evaluation questions testing micro-percents, over/under reasoning, fraction compatible numbers, and multi-step decisions.