University:
College
Course:
College Mathematics
Academic year:

2023
Views:

192

Pages:

2
Author:

J. Lay

Operating with Real Numbers Absolute Value The absolute Value of some thing is the distance it is from zero. The easiest way to get the absolute value of a number is to eliminate It's Sign. Absolute values are always positive or D. 2.1 31:3 31 01:0 5./1.5-1.5 *Adding and Subtracting Real Numbers Adding Wumbers with the Same Sign: Add members without regard to sign. Give the answer the Same sign as the original numbers. - Examples: 1. (-6)+(-3)=-9 2. 12 4 6 218 • Adding Numbers with Different Sign: - Ignore the Signs and Subtract the smaller Mumber From the larger one. - Give the answer the sign of the number with the greater absolute value. Examples: 1 (-6)+3 =3 2 (-7)+ 11:4 Sub tracing Numbers - change the Sign or the number or numbers being Subtracted. Add the resulting numbers: 6xamples: 1.(-6)-(-3)=(-6)+3=-3 213 4 = 134(-9)=9 Multiplying and Dividing Real Numbers Numbers with the Same Sign: - Multiply or divide the numbers without regard to Sign. - Give the answer a"t" Sign. Examples:1.(-6), (-3) +18=18 2.(12)÷3= +9=9 •Numbers with Different Sign: - Multiply or divide the numbers without regard to sign. - Give the answer a"-" Sign. - Examples: 1.(-6).(3):-18 2-12-(-3):-9