fraction.js

A rational numbers library
v5.2.2 URL: https://unpkg.com/fraction.js@5.2.2/dist/fraction.min.js
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mathnumbersparserratiofractionfractionsrationalrationalsrational numbersbigintarbitrary precisionmixed numbersdecimalnumeratordenominatorsimplification

@mathigon/fermat

Powerful mathematics and statistics library for JavaScript.
v1.1.24 URL: https://unpkg.com/@mathigon/fermat@1.1.24/dist/index.cjs.js
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mathematicsmathstatisticsprobabilityrandomfractionscomplex numbersmatrix

algebra.js

Build, display, and solve algebraic equations.
v0.2.6 URL: https://unpkg.com/algebra.js@0.2.6/algebra.js
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algebramathfractionsequationsexpressionslatex

format-quantity

Number formatter for imperial measurements with support for vulgar fractions
v3.0.0 URL: https://unpkg.com/format-quantity@3.0.0/dist/format-quantity.umd.min.js
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recipeingredientquantitynumberformatstringfractionsimperialromannumerals

exactnumber

Arbitrary-precision decimals. Enables making math calculations with rational numbers, without precision loss.
v2.0.1 URL: https://unpkg.com/exactnumber@2.0.1/dist/index.umd.js
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exactmatharithmeticcalculationrepeatingdecimalsfixedpointfractionfractionsarbitraryprecisionfloatdoublebignumberbigintegerbigdecimalbigintbitwise