Math vocabulary

Term Definition
Rational numbers • rational numbers are all integers, fractions,
repeating decimals and terminating decimals.
Irrational numbers • a real number that can be written as
a nonrepeating or nonterminating decimal but not as a fraction,
the decimal goes on forever without repeating.
Whole numbers • a counting number from zero to infinity,
• no fractions, decimal fractions or negative numbers.
Counting numbers • a whole number from one to infinity.
• used for counting 1, 2, 3 or ordering 1st, 2nd, 3rd.
Integers a positive number, a negative number or zero
but not a fraction or a decimal fraction.
Real numbers • numbers which can be written as decimals,
• all rational and irrational numbers.

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