🔢 Operator Gap
Operator Gap shows an equation with missing operators. The numbers and the answer are fixed — only the operators between them can change.
How to play
- Tap each gap to cycle through + − × ÷.
- Watch the live total update as you change operators.
- All gaps filled with the correct total solves the puzzle.
Strategy tips
- Division is the most restrictive operator — it only fits where operands divide evenly, so test ÷ gaps first.
- If the target is far larger than the numbers suggest, a × must be somewhere.
- Remember standard precedence — × and ÷ bind before + and −, so the total is not left-to-right.
FAQ
Do the operators follow normal precedence?
Yes — × and ÷ are applied before + and −, exactly like written arithmetic.
Can the same operator appear twice?
Yes — the gaps are independent and repeats are common.
Is every puzzle solvable?
Yes — each one is generated from a real equation, so a correct combination always exists.
Difficulty affects grid size and time is your score — finish fast, post to the daily leaderboard, or race a friend.
All puzzles