Fill in the missing numbers to solve the equations!
Fill in the missing number in each equation. Difficulty increases as you solve more! You have 90 seconds.
1. Each equation has a missing number shown as an underscore.
2. Use the number pad or your keyboard to type the answer, then press Enter.
3. Build a streak for score multipliers: 3 in a row = 2x, 7 = 3x, 10 = 4x!
4. Solve 5 equations to advance a level. Difficulty increases from addition through division to mixed operations.
5. You have 90 seconds. Score as many points as possible!
6. Wrong answers show the correct answer briefly before moving on.
Equation Solver is a free browser-based math game that challenges you to fill in missing numbers in equations. Starting with simple addition, the difficulty ramps up through subtraction, multiplication, and division, with the missing value appearing in different positions each time. The streak multiplier system rewards consecutive correct answers (up to 4x!), and the 90-second timer keeps the pressure on. With a mobile-friendly number pad and keyboard support, it is perfect for students, math enthusiasts, or anyone wanting a quick brain workout. No downloads or sign-ups required.
Equation Solver presents you with mathematical equations and challenges you to find the missing value as quickly as possible. Problems range from basic arithmetic to more complex expressions involving multiple operations and parentheses. Each correct answer advances you to the next problem, and a timer tracks how quickly you can work through a full set. The difficulty adapts to keep you in a productive zone where problems are challenging but solvable. It is an effective mental math trainer disguised as a game, building speed and accuracy with numbers in a format that feels more like play than practice. Track your improvement over time through score history and see how your solve speed compares across sessions.