SIGNED NUMBERS Review of Introductory MathematicsSIGNED NUMBERSThis chapter covers the processes of addition, subtraction, division, andmultiplication of signed numbers.EO 1.7 APPLY one of the arithmetic operations of addition,subtraction, multiplication, and division using signed numbers.CalculatorUsage,SpecialKeysChange Sign keyPressing this key changes the sign of the number in the display. To entera negative number, the number is entered as a positive number and thenthe change sign key is pressed to convert it to a negative. The display willshow a "-" in front of the number.AdditionAddition of signed numbers may be performed in any order. Begin with one number and countto the right if the other number is positive or count to the left if the other number is negative.Example:–2 + 3 = 0 - 2 + 3Solution:Begin with –2 and count 3 whole numbers to the right.Therefore: -2 + 3 = 1MA-01 Page 48 Rev. 0
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