Operator Puzzle - Math Brain

A math puzzle game where you keep numbers fixed and swap mathematical operators (+, −, ×, ÷) to create different answers. The core challenge is finding all solutions from 0-9 using the same set of numbers.

Features 4 difficulty levels: Easy (3-digit), Normal (4-digit), Hard (5-digit), and Very Hard (5-digit with answers 0-29). With 27 stages containing hundreds of puzzles, plus a daily challenge with time attack mode and global rankings.

Develops calculation skills, logical thinking, concentration, and mental math speed. Basic gameplay is completely free with 5 free hints daily. Perfect for children learning math and adults seeking brain training during commutes or leisure time!