Chapter 1 - Introduction to Algebraic Expressions - 1.7 Multiplication and Division of Real Numbers - 1.7 Exercise Set - Page 58: 29

-126

4.5 x -28 you first move the decimal one place to the right on 4.5 in order to multiply, at the end of the problem, you will swing it back 45 x 28= 1260 4.5 x -28= -126.0 Whenever you multiply a negative times a positive you multiply the absolute values of the numbers and place a negative in front of the product negative x positive = negative.