Setting up Calculator

Topics: Real number, Elementary arithmetic, Exponentiation Pages: 12 (668 words) Published: November 10, 2013
The Basics: CASIO fx-83GT PLUS

1

Common functions and where to find them
The Basics: CASIO fx-83GT PLUS

Not all models have a
solar cell
ALPHA
REPLAY
SHIFT

MODE / SETUP

Power of two
Powers
Convert fraction or
square root to decimal

Square root
Negative
number

Clear screen

Delete last entry
Use previous answer

2

Common functions
The Basics: CASIO fx-83GT PLUS

BUTTON

NAME

FUNCTION

SHIFT

Access functions in yellow text above buttons.

ALPHA

Access functions in pink text above buttons.

MODE / SETUP

Choose calculation mode: COMP (general), STAT
(statistical and regression), TABLE (build number
table from function) or VERIFY (true/false).

REPLAY
(up and down arrows)

Access previous calculations (not available in STAT
mode).

REPLAY
(left and right arrows)

Step into a previous calculation (to check or edit a
calculation).

All Clear

Clear screen for next calculation.

Delete

Delete item to the left of the cursor's position.

Standard to Decimal

Convert a fraction or square root answer to decimal.

Answer Memory

The result of the most recent calculation (can be used
in the next calculation).
3

Setup for first use
The Basics: CASIO fx-83GT PLUS

EXPLANATION

OPERATION – PRESS BUTTONS

Switch on
Turn on computation mode
Turn on decimal notation
Turn off scientific notation
Turn off improper fraction notation


You only need to perform the above steps once. Some of the features described in these slides will not work unless you make these changes.



If you want to reset your calculator to the default settings, perform the following: Restore default settings

4

Computation – fractions and decimals
The Basics: CASIO fx-83GT PLUS

EXPLANATION
3
5

OPERATION – PRESS BUTTONS

in decimals

0.6
3
5

Convert to fraction
7
4

RESULT

in decimals

1.75

Convert to fraction

1

7

3
4



The last result is "one and three quarters". It is the same quantity as and 1.75, just a different
4
way of expressing it.



Decimal notation is preferred over fraction notation in most areas of this course.



Some of the results in these slides are rounded off.

5

Computation – negative numbers
The Basics: CASIO fx-83GT PLUS

EXPLANATION

OPERATION – PRESS BUTTONS

RESULT

Subtraction

–4

"Double negative"

6

Negative × Negative

27

Positive
Negative

–0.5714285714



Remember these relationships when multiplying or dividing with negative numbers:

6

Computation – powers and square root
The Basics: CASIO fx-83GT PLUS

EXPLANATION

OPERATION – PRESS BUTTONS

RESULT

42

(4 to the power of 2)

16

54

(5 to the power of 4)

625

9


(square root of 9)

3

Notice the difference between the following calculations. Pay attention to the maths notation also.

5×2
5× 2


4.472
3.162

In the first calculation, the square root of 5 is calculated and then multiplied by two. In the second calculation, 5 multiplied by 2 is calculated, then the square root of the result is calculated (square root of 10).

7

Computation – brackets
The Basics: CASIO fx-83GT PLUS

EXPLANATION

OPERATION – PRESS BUTTONS

RESULT

7−3
4

1

5(2 + 3)

25

(6)(4)

24





If a calculation contains a negative number, you may need to place brackets around the negative number.
For example, if you want to calculate –2 to the power of 6, you need to input (− 2)6.

(− 2)6 (–2 to the power of 6)


64

If the brackets are excluded, the calculator computes 2 to the power of 6 first, then applies the negative. This is because the power function comes before the negative function in the order of operations. This gives a different result.

− 26

–64

8

Computation – editing
The Basics: CASIO fx-83GT PLUS

EXPLANATION


OPERATION – PRESS BUTTONS

RESULT

The Replay button can be...
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