Math Formulas Glossary
The math glossary links classroom formulas to live calculators and printable graph paper references. Use it when a formula needs a quick definition before calculation.
Resource type
Glossary
Each card links to a live tool, guide, or reference page with matching canonical and structured data coverage.
Percentage Formulas
Percent of value, percent change, increase, decrease, and decimal conversion.
Open resourceAlgebra and Coordinates
Slope, midpoint, distance, and linear-equation calculators.
Open resourceGeometry
Area, perimeter, circle, triangle, right-triangle, and Pythagorean theorem tools.
Open resourceStatistics
Mean, median, mode, standard deviation, percentile, and z-score.
Open resourceHow to use this page
| Topic | Reference | Note |
|---|---|---|
| Slope | (y2 - y1) / (x2 - x1) | Undefined when the run is zero. |
| Distance | sqrt((x2 - x1)^2 + (y2 - y1)^2) | Uses the Pythagorean theorem on coordinate differences. |
| Sample standard deviation | sqrt(sum((x - mean)^2)/(n - 1)) | Use sample formula when estimating from a subset. |
Math Formulas Glossary questions
How should I use these resources with the live tools?
Start with the explanation page to choose the right method, then open the linked calculator, converter, or paper generator to produce the result. Toolarithm keeps source notes, assumptions, and related links close to the tool so users can check the output instead of treating a number or template as a black box.