500 Math Crossword Puzzles for Kids — Addition, Subtraction, Multiplication & Division, Level 2

500 cross-number puzzles spanning all four operations — addition, subtraction, multiplication, and division — for Grades 2–4 (ages 7–10). Kids fill the blank squares so every equation reads true across and down, with friendly numbers to 20 that keep it calculator-free. Every puzzle has a QR code — and a searchable ID — to solve and self-check online for free, no app needed. Large-print, 4 puzzles per page, with a complete answer key.