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Elementary and Intermediate Algebra
Mark Dugopolski, Southeastern Louisiana University

Real Numbers and Their Properties
Properties of the Real Numbers

Warm-Ups



1

24 ÷ (4 ÷ 2) = (24 ÷ 4) ÷ 2
A)TRUE
B)FALSE
2

1 ÷ 2 = 2 ÷ 1
A)TRUE
B)FALSE
3

6 - 5 = -5 + 6
A)TRUE
B)FALSE
4

9 - (4 - 3) = (9 - 4) - 3
A)TRUE
B)FALSE
5

Multiplication is a commutative operation.
A)TRUE
B)FALSE
6

5x + 5 = 5(x + 1) for any value of x.
A)TRUE
B)FALSE
7

The multiplicative inverse of 0.02 is 50.
A)TRUE
B)FALSE
8

-3(x - 2) = -3x + 6 for any value of x.
A)TRUE
B)FALSE
9

3x + 2x = (3 + 2)x for any value of x.
A)TRUE
B)FALSE
10

The additive inverse of 0 is 0.
A)TRUE
B)FALSE