Solve voltage, current, resistance, and electrical power.

Find percentages, percent change, increases, and decreases.

Calculate exact nPr and nCr values and understand when order matters.

Find the prime factors of a whole number.

Calculate basic, combined, conditional, and complement probabilities.

Calculate ideal projectile range, height, and flight time.

Solve quadratic equations and inspect roots, discriminant, and vertex.

Simplify ratios and solve proportions with a missing value.

Calculate RC time constant, settling time, cutoff frequency, and charge/discharge progress.

Decode 4-band and 5-band resistor color codes.

Find running pace per km or mile from distance and time.

Find sales tax, final price, pre-tax price, or tax rate.

Scientific math functions with degree and radian modes.

Combine resistors in series or parallel and calculate total current and power.

Mean, median, mode, variance, standard deviation, and more.

Find tip, total, and per-person split for a bill.

Calculate transformer turns ratio, secondary turns, current, and reflected impedance.

Solve triangle sides, angles, area, and perimeter.

Find the price per unit for packages and multipacks.

Calculate voltage-divider output or solve R2 for a target voltage.

Solve wavelength, frequency, or wave speed with v = fλ.

Solve mechanical work, force, or distance with W = Fd cos(θ).