Tool/Solveur to find missing number/fill the blanks puzzles/equations. Calculator with missing numbers (blanks) solves addition, subtraction, multiplication, division as a mathematical puzzle which consists in finding the missing number or digit.
Missing Numbers Calculator - dCode
Tag(s) : Number Games, Arithmetics
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Missing Numbers Calculator
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Tool/Solveur to find missing number/fill the blanks puzzles/equations. Calculator with missing numbers (blanks) solves addition, subtraction, multiplication, division as a mathematical puzzle which consists in finding the missing number or digit.
Answers to Questions
How to solve a calculation with blanks?
Solving a calculation with operators and missing digits is similar to a cryptarithm and uses deduction and extraction of parts of the calculation.
Example: Exercise where ?s have to be found ??5 + 42? = 539 => 115 + 424 = 539
Example: 12 + 23 = ? has no solution but 12 + 23 = ?? has for solution 12 + 23 = 35
It is useful to calculate digits at extremities, or check individually calculations to the ten digits, or the hundreds digit etc.
dCode also has a cryptarithm solver (where blanks are letters), a mathematical equation solver or even a countdown game calculation tool.
How does the missing numbers solver works?
dCode solver allow usual operators like additions +, subtractions -, multiplications * and divisions /. It also handles comparison operators superior and inferior > and <.
The blanks have to be replaced by ? (interrogation marks). There is no limit but above 7 or 8, the calculation will be very long.
Example: 1+?=3 is solved with 1+2=3
Example: 2*?=8 is solved with 2*4=8
This solver uses a brute-force method, this means that it tries all combinations and display the possible ones.
Source code
dCode retains ownership of the online 'Missing Numbers Calculator' tool source code. Except explicit open source licence (indicated CC / Creative Commons / free), any algorithm, applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any function (convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (PHP, Java, C#, Python, Javascript, Matlab, etc.) no data, script or API access will be for free, same for Missing Numbers Calculator download for offline use on PC, tablet, iPhone or Android !
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