Ecole Supérieure de Commerce de Neuchâtel Pierre Marchal

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Presentation transcript:

Ecole Supérieure de Commerce de Neuchâtel Pierre Marchal Number Sets 1MPES Ecole Supérieure de Commerce de Neuchâtel Pierre Marchal http://creativecommons.org/licences/by/3.0/ 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 numbers is the set of (positive and negative) is the set of numbers (fractions) is the set of numbers (including irrational numbers) Natural/Counting Whole Integers Rational Real

Number Sets: Examples Natural/Counting Whole Integers Rational Real

Sketching the Number Sets : natural numbers : whole numbers : integers : rational numbers : real numbers 1.2 π 1 -5 234 … … -1000 … … -0.333...

Is member of vs. is subset of A number a set, noted Example: A number a set, noted A set of an other set, noted A set of an other set, noted is member of is not member of is a subset is not a subset

Examples of Application

Complete with the correct set (s) 25 1.4 2.5 -0.4 -17 , , , ,

Writing Numbers Be careful with rational, they may be written in several ways: It is always necessary to reduce fractions ! = = = = = = 2

Ranking Numbers 5 - 5 - 5 5 10

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 for the next course, learn your lesson! Thank you for your ATTENTION