Overview
- TN.com.ar walks through 9 ÷ 9 − 9 + 9 × 9 + (9 − 9), applying parentheses, then division and multiplication, then addition and subtraction to reach 73.
- LA NACION solves (45² − 300) ÷ (25 − 5) × (18 − 12) + 6³ with exponents and parentheses first, then left‑to‑right multiplication and division, for a final 733.5.
- Diario Uno resolves (90 + 20 ÷ 5) + (4 × 5) by prioritizing operations inside parentheses and evaluating left to right, concluding with 114.
- All three articles stress PEMDAS/BODMAS and warn that treating expressions strictly left to right causes predictable mistakes.
- The coverage links regular mental calculation to improved focus, memory and decision‑making, citing a Princeton University study in the Journal of Neuroscience, and LA NACION directs readers to its LN Juegos platform.