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Lesson 's Glossary: Real
number: Any number which can be negative, positive, or zero.
Additive inverses: The opposite of a number. Identity element for
addition: Zero (0).
Identity element for multiplication: One (1).
Integers: All numbers in the set containing positive integers, negative integers, and zero.
Irrational numbers: Any number that is impossible to write it as a fraction. A decimal number that doesn’t end or keeps repeating.
Negative integers: The numbers -1,-2,-3,-4,
and so on. Negative number: The opposite of a positive number.
Negative side: The side situated at the left of the origin in a horizontal number line.
Positive integers: Natural numbers: 1, 2, 3, 4, 5, ...
Positive number: The opposite of a negative number.
Positive side: The side situated to the right of the origin in a horizontal number line.
Real number: Any number which can be negative, positive, or zero.
Reciprocals: Any two numbers which multiplied give 1; also known as multiplicative inverse.
Whole numbers: All numbers in the set containing zero and all positive integers.
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