Addition : Addition is the mathematical operation that describes increasing a number by an amount equal to a second number. The mathematical symbol for addition is the plus sign $+.$ The term addition is also used for a generalization of this basic operation on numbers to functions, vectors and matrices.

Hundred : Hundred refers to the number 100.

Zero : The number 0.

Gallon : A gallon is a unit for measuring volume. A gallon is 4 quarts or about 3.8 liters.

Pint : A pint is a unit for measuring volume. 2 pints are a quart, and 2 cups are a pint.

Quart : A quart is a unit for measuring volume. 2 pints are a quart and 4 quarts are a gallon.

Minimum : The minimum of a set of numbers is the lowest of the numbers in the set. A function has a minimum at $x_0$ if $f(x_0)\leq f(x)$ for all $x.$

Number : A number $x$ is a mathematical symbol representing a quantity.