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O'Keefe, A Chapter 2
Lesson 2.1: Properties of Addition and Multiplication
Question | Answer |
---|---|
What is the Commutative Property? | Order does not matter. Addition: 2+3=3+2, a+b=b+a, Multiplication: 2(3)=3(2), ab=ba |
What is the Associative Property? | The grouping does not matter. Addition: 2+(3+4)=(2+3)+4, a+(b+c)=(a+b)+c Multiplication: 2(3*4)=(2*3)4, a(b*c)=(a*b)c |
What is the Identity Property? | The number multiplied or added which allows me to get the number back again. Addition: 2+0=2, 9+0=9 Multiplication: 2(1)=2, 1a=a |