Casio CFX-9970G Manuale - Pagina 2

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2-1 Basic Calculations

k k k k k Arithmetic Calculations

k k k k k Number of Decimal Places, Number of Significant Digits,

P.6

P.43

• Enter arithmetic calculations as they are written, from left to right.

• Use the - key to input the minus sign before a negative value.

• Calculations are performed internally with a 15-digit mantissa. The result is

rounded to a 10-digit mantissa before it is displayed.

• For mixed arithmetic calculations, multiplication and division are given priority

over addition and subtraction.

Example

23 + 4.5 – 53 = –25.5

(–12)

(–2.5) = 268.8

(2 + 3) 10

= 500

1 + 2 – 3

5 + 6 = 6.6

100 – (2 + 3)

4 = 80

2 + 3

(4 + 5) = 29

(7 – 2)

(8 + 5) = 65

= 0.3

4 5

"(2+3)E2" does not produce the correct result. Be sure to enter this calculation as

shown.

Final closed parentheses (immediately before operation of the w key) may be omitted, no

matter how many are required.

A multiplication sign immediately before an open parenthesis may be omitted.

This is identical to 6 / 4 / 5 w.

Exponential Notation Range

• These settings can be made while setting up the display format (Display) with

the set up screen.

• Even after you specify the number of decimal places or the number of signifi-

cant digits, internal calculations are still performed using a 15-digit mantissa,

and displayed values are stored with a 10-digit mantissa. Use Rnd (4) of the

Numeric Calculation Menu (NUM) to round the displayed value off to the

number of decimal place and number of significant digit settings.

Operation

23+4.5-53w

56*-12/-2.5w

(2+3)*1E2w*

1+2-3*4/5+6w

100-(2+3)*4w

2+3*(4+5w*

(7-2)(8+5)w*

6 /(4*5)w*

Display

–25.5

268.8

500

6.6

0.3