Play puzzle games that require combining numbers to reach target sums. Choose from multiple difficulty levels. Track progress with statistics and earn achievements. Enjoy minimalist design with smooth animations. No in-game ads.
Perform to sum two numbers. Generate worksheets for practice. View step-by-step calculations. Save and share worksheets. Adjust number ranges and difficulty levels.
Practice math from 1 to 20 through a game where correct answers unlock the . Select specific and set the number of to practice. Solve falling sums by matching answers to the door. Track progress as are completed.
Play by pairing cards that sum to 13. Remove pairs from the to clear the board. Customize layouts and board settings. Use hints for challenging moves. Complete daily challenges to improve skills. Track progress with detailed game statistics.
With symbolic algebra, equation solving, and calculus functions. Supports fractions, repeating decimals, and high-precision numbers. Displays results as simplified expressions or numerical values.
SQL through 15-minute daily sessions without a laptop. Complete interactive exercises with real-world datasets. Receive instant feedback and track progress. Build skills from beginner to job-ready.
Solve logic puzzles combining and Kakuro rules. Fill 9x9 grids with numbers 1-9 following rules and sum constraints. Use add/subtract calculations to determine cell values. Track progress and complete puzzles of varying difficulty.