Math

Find percent increase or decrease, apply a known percent change, or calculate the starting value before a change.

Calculate net square footage from added and excluded sections, then estimate flooring cartons using waste and carton coverage.

Solve a right triangle from sides or angle inputs. Get missing sides, acute angles, area, and perimeter with clear checks.

Add, subtract, multiply, divide, compare, convert, and simplify fractions and mixed numbers with clear exact and decimal results.

Find slope from two points, rise and run, or y = mx + b. Get fraction, decimal, angle, grade, and equation forms.

Find area for common 2D shapes, including triangle methods, with unit conversion and clear input checks.

Find distance, speed, or time, compare 2D or 3D points, and measure Earth-surface distance from latitude and longitude.

Enter one circle measure to find radius, diameter, circumference, and area with matching units and clear formulas.

Find total or lateral surface area for common 3D shapes, with formulas, unit choices, and clear area breakdowns.

Find nth terms, sums, ratios, differences, and Fibonacci values, plus a pattern check and term preview.