1. Percent Sense: Beyond 100% and Below 1%
Start with the 100-grid, then stretch to percents that are not stuck between 0 and 100: several wholes, half squares, and fractions that do not land neatly on a friendly number. Problems climb from Warm-Up to Core, Stretch, and Challenge.
Empieza con la cuadrícula de 100 y avanza a porcentajes que no se quedan entre 0 y 100: varios enteros, medios cuadrados y fracciones difíciles. Los problemas suben de Calentamiento a Núcleo, Reto y Desafío.
2. Simplify First, Then Scale to 100
Start with wholes that scale to 100 in one step, then move to wholes that need simplifying first. Divide both numbers by their greatest common factor, then multiply both by whatever makes the whole 100. Watch for decimals and for parts bigger than the whole.
Divide ambos números entre su máximo común divisor y luego multiplica para que el entero sea 100. Cuidado con los decimales.
3. Find the Part, the Whole, or the Percent
Any one of the three can be the mystery. Start with benchmark percents, then build from a benchmark (10%, 5%, 1%, or 50%) on the double number line, then scale up or down.
Cualquiera de los tres puede ser el misterio. Parte de un punto de referencia (10%, 5%, 1% o 50%) en la recta numérica doble.
4. Multi-Step Stories & Error Detective
Use percents to compare different-sized groups, chain several steps together, and decide whether someone else’s reasoning holds up.
Usa porcentajes para comparar grupos de distinto tamaño, encadenar pasos y decidir si el razonamiento de otra persona es correcto.
5. Mastery Challenge
Ten questions with tempting wrong answers. Every choice gives an explanation. Your first-try score is what counts.
Diez preguntas con respuestas incorrectas muy tentadoras. Cada opción da una explicación.