About quiz.3o9.in

quiz.3o9.in is a free puzzle and quiz site with six sections:

Arithmetic (missing operator) puzzles -- an equation is shown with its operators removed; you work out which of +, -, ×, or ÷ belong in each blank so the equation is true, following standard order of operations.
Matchstick puzzles -- a false equation made of matchstick-style digits, solvable by moving or removing one or more sticks.
Find the Cat grid puzzles -- a colored grid where you place one cat in every row, column and color region, with no two cats touching (diagonals included). Every grid has exactly one solution reachable by logic alone.
Cats & Dogs puzzles -- fill a grid with cats and dogs so every row and column has equal numbers of each, never three of the same animal in a row, following = and × clues between squares.
Paw Trail puzzles -- draw one continuous path through every square of a grid, visiting the numbered squares in order and never crossing a wall.
Speed Maths tests -- timed mental-maths quizzes on times tables (2 to 30), squares, cubes, roots, percentages, fractions and arithmetic, each with a reference chart, tricks and three levels.

Every puzzle includes a full step-by-step solution, and puzzles are organized by difficulty so you can pick a level that suits you.

Who runs this

quiz.3o9.in is one of several independent tools and directories built under e309 -- see the full list below.

Questions, corrections, or feedback: quiz@3o9.in