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Viral Math Puzzles From Argentine Media Double as Quick Lessons on Order of Operations

Step-by-step solutions emphasize left-to-right rules, with Princeton research cited for cognitive gains.

Overview

  • Diario Uno on Oct. 2 posts the challenge (105 + 5 ÷ 5) + (5 × 4) and shows a solution of 126 after resolving parentheses and applying operations left to right.
  • LA NACION on Oct. 1 features (30² − 150) ÷ (18 − 6) × (12 − 8) + 7³, demonstrating division then multiplication in sequence and arriving at 593.
  • TN.com.ar publishes a similar walkthrough for 3 ÷ 3 − 3 × 3 + (3 − 3), yielding 10 under the same order-of-operations rules.
  • The coverage reiterates PEMDAS/BODMAS and the equal precedence of multiplication and division, warning that misapplied sequencing leads to common mistakes.
  • LA NACION cites a Princeton University study in the Journal of Neuroscience on mental arithmetic benefits, claims only one in ten solve its puzzle under a minute, and promotes its LN Juegos platform.