Everyday math

Work out sale prices, successive discounts and entered sales tax.

Choose a tip basis and split the total fairly between people.

Compare pack prices and quantities in compatible units.

Everyday arithmetic with parentheses, memory and a calculation tape.

Find a percentage, a proportion, or the change between two values.

Add, subtract, multiply and divide fractions, with simplified working.

Simplify integer ratios or scale a proportion to a new total.

Generate local cryptographic integer or decimal draws, with optional unique integers.

Evaluate powers, roots, logs and trigonometry in degrees or radians.

Solve SSS, SAS, ASA and ambiguous SSA triangles with visible geometry.

Plot functions of x, inspect a value table and adjust the viewing range.

Solve linear and quadratic equations from their coefficients, with working.