Download There are 4 arrow keys in the upper right hand side of the calculator

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TI-30X II
CALCULATOR OPERATIONS
Parenthesis ( &
) :
When using the calculator to evaluate an expression, use parentheses where the variable was in the
expression. The keys for the parentheses are above the 8 and 9.
You can enter equations just like you would write them down.
ie. 4( 5 + 7 ) – 2( 2 – 6 ) =
4
(
5
+
7
)
–
2
(
2
–
6
)
= , you get 56.
Enter negative numbers
When entering negative number at the beginning of an operation, use the ( - ) , the key used for
negative is below the 3. Notice the negative in the calculator is smaller and higher then the subtraction sign.
Fractions using
A b/c or A b/c◄►d/e :
For simple fractions,
enter the numerator, A b/c and then the denominator.
ie. for
2
- enter 2
3
A b/c
3
= , you get 2/3
For mixed fractions,
enter the whole number, A b/c , enter the numerator, A b/c and then the denominator.
ie. for 2
3
- enter 2
5
A b/c
3
A b/c
5
= , you get 2 u 3/5
Adding/subtracting, multiplying/dividing fractions:
Enter your fraction, choose your operation (+, -, *, /), enter next fraction and = .
Use the keys on the far right hand side of the calculator.
There are 4 arrow keys in the upper right hand side of the calculator
Up and down arrows allow you to scroll up and down through the equations that you have already typed
in. This is useful to make changes to previous equations or to check if the data you entered was correct.
Left and right arrows allow you to move your cursor back and forth over the data on the screen to make
changes. To make changes, either type over top of the existing equation or use the ins/del buttons to insert
or delete characters.
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The keys on the calculator will usually perform 2 functions, the one written ion the key and the one written
above the key. To use what is written above the key, you must first press the 2nd key.
To change mixed fractions to improper fractions using A b/c◄►d/e,
enter the mixed fraction, then enter the 2nd
A b/c
3
- enter 2 A b/c 3 A b/c 5
5
- now press 2nd A b/c = , you get 13/5.
ie. for 2
= .
= , you get 2 u 3/5
This is the same to change improper fractions to mixed fractions.
If you have 13/5
- now press 2nd
A b/c
= , you get 2 u 3/5.
If you enter an improper fraction, the calculator will automatically change it to a mixed fraction.
enter 7
A b/c
4
= , you get 1u 3/4
Changes fractions to decimals & decimals to fractions using F◄►D :
Enter a decimal/fraction,
ie. 2.5 - enter 2
Exponents using
x² &
2nd
.
PRB
= .
5 = , you get 2.5 press 2nd
PRB
= , you get 2 ½,
^ :
Entering exponents of the 2nd power use the x² ;
ie. 72 - enter 7
x²
= , you will get 49.
Entering exponents of more than the 2nd power use the ^ ;
ie. 25 - enter 2
^
5
= , you will get 32.
Insert/Delete
The INS / DEL buttons to insert or delete characters in the line display.
2nd
DEL : Allows you to insert characters wherever the cursor is blinking.
DEL : Allows you to delete characters wherever the cursor is blinking.