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Math & AlgebraGenerated accuracy model review: 2026-05-06
Fraction Calculator accuracy and testing
This page documents how Calwarden builds trust for this calculator: source notes, regression-style default tests, limitations, assumptions, unit handling, rounding, and visible change history.
Formula source
- The calculator finds a common denominator for addition/subtraction. For multiplication, it multiplies numerators and denominators straight across. For division, it flips the second fraction (reciprocal) and multiplies.
Test cases
Default input regression check
Generated from the checked-in default inputs and calculate function.
Inputs
- Num 1: 1
- Denom 1: 2
- Operation: +
- Num 2: 1
- Denom 2: 3
Expected outputs
- Result Fraction: 5/6
- Decimal Value: 0.83
Known limitations
- This page documents the checked-in calculator logic and does not certify results for every real-world edge case.
- Use the result as a planning estimate unless the calculator page states a stricter purpose.
Assumptions
- Each input is a simple fraction with a non-zero denominator.
- Mixed numbers should be converted to improper fractions before use.
- The final result is simplified to lowest terms.
Unit handling
- Num 1 accepts numeric values.
- Denom 1 accepts numeric values.
- Operation accepts one of the configured options.
- Num 2 accepts numeric values.
- Denom 2 accepts numeric values.
Rounding rules
- Number displays use up to 2 decimal places in the calculator UI.
Version history
1.0.0 - 2026-05-06
Generated accuracy and testing page from the current fraction-calculator calculator definition.
Change log
2026-05-06
Published default regression test documentation and metadata fallbacks for Fraction Calculator.
Calculator transparency
Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.