Casio FX-55 User Guide - Page 10

Percent Calculations Inputting a value and pressing & causes the input value to become a percent. 150 × 20% = 30 150 * 20 &= 30 Calculate what percentage of 880 is 660. (75%) 660 / 880 &= Increase 2500 by 15%. (2875) 2500 + 2500 * 15 &= Discount 3500 by 25%. (2625) 3500 - 3500 * 25 &= 75 2875 2625 Percent Conversion Calculation results can be converted to a percent. While a calculation result is displayed, press !&('%). Percent display can be up to 10 digits long. Pressing !&('%) again returns the calculation result to its original display format. 1 + 2 = 3 = 300% 1 + 2 300% 3 1 ÷ 3 = 0.33 = 33.33% (Fix 2) sd(Fix)c 1 / 3 =!&('%) 33.33% 4 + 2 = 146.6666667% 5 3 4 ' 5 e+ 2 ' 3 =!&('%) '2 = 141.4213562% ! 2 =!&('%) 1°2´3˝ = 103.4166667% 1 e 2 e 3 e=!&('%) 146.6666667% 141.4213562% 103.4166667% • When the number of display digits is specified by Fix, the value is converted to a percent and then adjusted to the specified number of digits. The number of display digits setting is not applied to the value stored in Ans memory. • When MathO is selected as the display format and the calculation result is a fraction, root ('), or pi (π), the result is converted to a decimal fraction and then to a percent. Pressing !&('%) again displays the decimal fraction value. • When the calculation result is a sexagesimal value (degrees, minutes, seconds), it is converted to a decimal value and then to a percent. • Percent conversion cannot be performed on the result of a remainder calculation (÷R). Degree, Minute, Second (Sexagesimal) Calculations Performing an addition or subtraction operation between sexagesimal values, or a multiplication or division operation between a sexagesimal value and a decimal value will cause the result to be displayed as a sexagesimal value. You also can convert between sexagesimal and decimal. The following E-9