Arrange tiles to make the equation equal the target!
1. You are given a target number and a set of number + operator tiles.
2. Click or drag tiles into the equation slots to build an expression.
3. Standard math order of operations applies (multiplication before addition).
4. Click a placed tile to remove it back to the available pool.
5. Press Check when all slots are filled. Correct answer earns up to 10 points.
6. Use Hint if stuck (costs 3 points per use).
Equation Builder is a free online math puzzle game where you arrange numbers and operators to match a target value. With 20 hand-crafted puzzles of increasing difficulty, it tests your arithmetic skills and logical thinking. Drag tiles to build equations using addition, subtraction, multiplication, and division. Perfect for students, math enthusiasts, or anyone who loves number puzzles. No downloads required. Works on desktop and mobile.
Remember that order of operations matters: multiplication and division happen before addition and subtraction. Start by looking at whether the target is odd or even, since that constrains which operators are possible. On harder puzzles, try working backward from the target. If the target is large, look for multiplication opportunities. If it's small, subtraction is likely involved. Save hints for later puzzles where the difficulty ramps up significantly.
Equation Builder flips traditional math problems on their head by giving you the answer and asking you to construct the equation. You receive a set of numbers and operators and must arrange them to create a valid mathematical equation that equals the target value. It is a creative puzzle that exercises mathematical thinking differently from standard arithmetic drills because you are designing rather than solving. Multiple valid solutions often exist for a single target, rewarding creative approaches. Difficulty scales from simple addition and subtraction puzzles to complex multi-operation equations. Each round generates a fresh challenge, and a timer adds optional pressure for players who enjoy racing against the clock.