Number Sets 1MPES2 Ecole Supérieure de Commerce de Neuchâtel Pierre Marchal Attribute to: Pierre Marchal (Jean-Piaget High School)
Objectives of the course By the end of the course, you should be able to: – Define and characterize number sets – Differentiate numbers (nature, writing, and ranking) – Differentiate between being a member and being a subset – Rank numbers correctly
Number Sets: Definition is the set of numbers is the set of (positive and negative) is the set of numbers (fractions) is the set of numbers (including irrational numbers) Natural/Counting Integers Rational Real Whole
Number Sets: Examples Natural/Counting Integers Rational Real Whole
Sketching the Number Sets … … … … π : natural numbers : integers : rational numbers : real numbers : whole numbers
Is member of vs. is subset of A number a set, noted – Example: A number a set, noted – Example: A set of an other set, noted – Example: A set of an other set, noted – Example: is member of is not member of is a subset is not a subset
EXAMPLES OF APPLICATION
Complete with the correct set (s) ,,,,,
Writing Numbers Be careful with rational, they may be written in several ways: It is always necessary to reduce fractions ! = = == = = 2
Ranking Numbers
By the end of this course You are able to: – Define and characterize number sets – Differentiate numbers (nature, writing, and ranking) – Differentiate between being a member of and being a subset of – Rank numbers correctly
THANK YOU FOR YOUR ATTENTION See you next Monday, enjoy your week-end !