Overview
- Gestión and El Comercio ran a cluster of short puzzle pieces on Tuesday, June 23, 2026, that present quick, time-limited arithmetic, symbol and small-algebra challenges for readers to solve.
- The articles give step-by-step answers to each challenge, for example reporting 75 ÷ (15−10) + 4×3 = 27, 180 ÷ 3 × 2 − 6 = 114 and 88 ÷ 4 × (6+9) = 330.
- Writers repeatedly instruct readers to apply the order of operations (PEMDAS or jerarquía operacional) and warn that ignoring this rule causes common mistakes in mixed expressions.
- Several pieces cite research from institutions such as Stanford, Universidad Técnica de Cotopaxi, Universidad Nacional de Asunción and Universidad del Sur de México to argue that regular mental arithmetic can boost memory, processing speed and brain plasticity.
- At least one Gestión item republished an El Comercio piece with authorization, and the stories follow a viral format of brief timers, worked solutions and motivational copy designed to drive reader engagement and practice; no corrections or follow-ups have been reported.