Integers and Rational Numbers - Vocabulary

Vocabulary flashcards covering key terms from Page 1 notes on Integers and Rational Numbers.

Integer

A whole number that can be positive, negative, or zero, but does not include fractions or decimals.

Rational number

A number that can be written as a fraction where both the numerator and denominator are integers and the denominator is not zero.

Numerator

The top number in a fraction, representing how many parts are being considered.

Denominator

The bottom number in a fraction, which shows how many equal parts the whole is divided into.

Positive number

A number greater than zero.

Negative number

A number less than zero.

Opposite

A number that is the same distance from zero as another number, but on the other side of zero on the number line.

Absolute value

The distance of a number from zero on the number line, always expressed as a positive value.

Number line

A straight line with numbers placed at equal intervals, used to represent numbers and their relationships.

Additive inverse

A number that, when added to a given number, results in a sum of zero.

Fraction

A way of expressing a number as a part of a whole, written as one integer over another.

Decimal

A number that uses a decimal point to show a part of a whole, based on powers of ten.

Whole number

A number without fractions or decimals; includes zero and all positive integers.

Irrational number

A number that cannot be written as a simple fraction, with a non-repeating and non-terminating decimal expansion.

Coordinate plane

A two-dimensional surface formed by two number lines that intersect at right angles, used to plot points, lines, and curves.