Casio Fx-260 Manual

1/2

Calculator Directions for Casio fx-260

Mathematics

To prepare the calculator for use the first time, press the (upper rightmost) key. “DEG” will

appear at the top center of the screen and “0.” at the right. This indicates the calculator is in the

proper format for all your calculations.

To prepare the calculator for another question, press the or the red key. This clears

any entries made previously.

To do any arithmetic, enter the expression as it is written. Press (equals sign) when finished.

Example A:

First press or .

Enter the following:

The correct answer is 14.

If an expression in parentheses is to be multiplied by a number, press (multiplication sign)

between the number end the parenthesis sign.

Example B:

First press or .

Enter the following:

The correct answer is 72.

2/2Calculator Directions for Casio fx-260 (continued)

Mathematics

To find the square root of a number

• enter the number

• press the (upper leftmost) key (“SHIFT” appears at top-left of the screen);

• press (third from the left on top row) to access its second function: square

root. DO NOT press and and at the same time.

Example C:

First press or .

Enter the following:

The correct answer is 8.

To enter a negative number such as -8

• enter the number without the negative sign (enter 8);

• press the “change sign” ( ) key which is directly above the key

All arithmetic can be done with positive and/or negative numbers.

Example D:

First press or .

Enter the following:

The correct answer is -4.

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