Basic Identities

Question 1

Closure Property of Addition

Answer 1

Sum (or difference) of 2 real numbers equals a real number

Question 2

Additive Identity

Answer 2

a + 0 = a

Question 3

Definition of Subtraction

Answer 3

a - b = a + (-b)

Question 4

Commutative of Addition

Answer 4

a + b = b + a

Question 5

Associative of Addition

Answer 5

(a + b) + c = a + (b + c)