Casio fx-991ES PLUS User Manual download pdf (Page 11)

E-10

P ÷ 6 =



= 0.5235987756 

(P) 6 



0.5235987756

(

+ 2) s

6 + 2

= 5.913591358 

 2 C 2  3 

6 + 2

5.913591358

While Linear Display is selected, each press of 5 will toggle the currently

displayed calculation result between its decimal form and fraction form.

1 ÷ 5 = 0.2 =

 5  0.2

1Y5

1 –

= 0.2 1

 4  5 

1Y5

0.2

Important: • Depending on the type of calculation result that is on the display

when you press the

5 key, the conversion process may take some time

to perform.

• With certain calculation results, pressing the 5 key will not

convert the displayed value.

Note: With Natural Display, pressing

 instead of  after inputting

a calculation will display the calculation result in decimal form. Pressing

after that will switch to the fraction form or

P form of the calculation result.

The

 form of the result will not appear in this case.

Basic Calculations

Fraction Calculations

Note that the input method for fractions is different, depending upon whether

you are using Natural Display or Linear Display.

3 2 6

 2  3 C 1  2 

or  2 A 3 C 1 A 2 

1 2  3  1  2  7Y6

2 2

4 − 3

 4 () 3 C 1 A 2 

1 4  3  1  2  1Y2

Note: • Mixing fractions and decimal values in a calculation while Linear

Display is selected will cause the result to be displayed as a decimal value.

• Fractions in calculation results are displayed after being reduced to their

lowest terms.

To switch a calculation result between improper fraction and mixed

fraction format: Perform the following key operation:

5(



)

To switch a calculation result between fraction and decimal format:

Press

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 45 46

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Casio fx-991ES PLUS User Manual Page 11

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