Tool/Solver to solve fill the blanks calculations where the operators are missing. A calculation/equation with blanks is a mathematical exercise consisting of finding the missing operation (addition, subtraction, multiplication, division).

Missing Operators Equation Solver - dCode

Tag(s) : Arithmetics, Number Games

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The solver below only finds **missing operation signs**. For a calculation with missing numbers dCode also has a tool:

See also: Missing Numbers Calculator

The resolution of calculation with blank (missing operations) is a common school puzzle consisting of finding the possible operations, for example, it is impossible to divide by 0. Also multiplications introduce large numbers, so they must be avoided if the result is small. Non-integer divisions are generally to be avoided.

__Example:__ `1 ? 2 ? 3 = 0` has for solution `1 + 2 - 3 = 0`

__Example:__ `(1 ? 2 ? 3) ? 4 = 0` has for solution `(1 + 2 - 3) * 4 = 0`

dCode also has a similar solver for numbers with missing digits.

The program handles the 4 operators (addition `+`, subtraction `-`, multiplication `*` and division `/`), the equal sign `=`, but also the upper and lower operators `>` and `<`.

The blanks should be replaced with `?` (Question marks).

The solver uses a brute-force method, ie it tries all combinations and displays possible combinations.

The solver is limited to numbers and does not accept variables or letters in the calculation. Also, parentheses cannot be guessed and must be supplied.

Concatenation is the action of linking elements.

__Example:__ Concatenating the numbers `1` and `2` is creating the number `12`.

dCode retains ownership of the online "Missing Operators Equation Solver" tool source code. Except explicit open source licence (indicated CC / Creative Commons / free), any "Missing Operators Equation Solver" algorithm, applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any "Missing Operators Equation Solver" function (calculate, convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (Python, Java, PHP, C#, Javascript, Matlab, etc.) and no data download, script, copy-paste, or API access for "Missing Operators Equation Solver" will be for free, same for offline use on PC, tablet, iPhone or Android ! dCode is free and online.

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Source : https://www.dcode.fr/missing-operators-equation-solver

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