Clearing Calculator Entries and Memories

Note: To clear variables selectively, see the specific worksheet chapters in

this guidebook.

Resetting the calculator:

• Clears the display, all 10 memories, any unfinished

calculations, and all worksheet data.

• Restores all default settings

• Returns operation to the standard-calculator mode

To clear Press

One character at a time, starting with the last digit

keyed in

*

An incorrect entry, error condition, or error

message

P

Correcting Entry Errors

Example: You mean to calculate 3 Q 1234.56 but instead enter 1234.86.

The prompted worksheet and reset default values & z

Calculator format settings and reset default values & |

& z

• Out of the prompted worksheet and return to

standard-calculator mode

• All pending operations in standard-calculator

mode

& U

• In a prompted worksheet, the variable value

keyed in but not entered (the previous value

appears)

• Any calculation started but not completed

P P

TVM worksheet variables and reset default values & U

& ^

One of the 10 memories (without affecting the

others)

Q D and a

memory number

key (0–9)

You can correct an entry without clearing a calculation, if

you make the correction before pressing an operation key

(for example, H or 4).

• To clear the last digit displayed, press *.

• To clear the entire number displayed, press P.

Note: Pressing P after you press an operation key clears

the calculation in progress.

To Press Display

Begin the expression. 3 < 3.00

Enter a number. 1234.86 1,234.86

Erase the entry error. * * 1,234.

Key in the correct number. 56 1,234.56

Compute the result. N 3,703.68

To clear Press

Math Operations

When you select the chain (Chn) calculation method, the calculator

evaluates mathematical expressions (for example, 3 + 2 Q 4) in the order

that you enter them.

Examples of Math Operations

These operations require you to press N to complete.

These operations do not require you to press N to complete.

To Press Display

Add 6 + 4 6 H 4 N 10.00

Subtract 6 N 4 6 B 4 N 2.00

Multiply 6 Q 4 6 < 4 N 24.00

Divide 6 P 4 6 6 4 N 1.50

Find universal power: 3

1.25 3 ; 1.25 N 3.95

Use parentheses: 7 Q (3 + 5) 7 < 9 3 H 5 : N 56.00

Find percent: 4% of $453 453 < 4 2 N 18.12

Find percent ratio: 14 to 25 14 6 25 2 N 56.00

Find price with percent add-on:

$498 + 7% sales tax

498 H 7 2

N

34.86

532.86

Find price with percent discount:

$69.99 N 10%

69.99 B 10 2

N

7.00

62.99

Find number of combinations where:

n = 52, r = 5

52 & s 5 N 2,598,960.00

Find number of permutations where:

n = 8, r = 3

8 & m 3 N 336.00

To Press Display

Square 6.3

2 6.3 4 39.69

Find square root: 15.5 3 3.94

Find reciprocal: 1/3.2 3.2 5 0.31

Find factorial: 5! 5 & g 120.00

Find natural logarithm: ln 203.45 203.45 > 5.32

15.5

* The random number you generate might be different.

** Angles can be computed in degrees or radians. Examples show

angles in degrees. (See “Choosing the Angle Units” on page 5.)

Universal Power ;

Press ; to raise the displayed positive number to any power (for

example, 2-5 or 2(1/3)).

Note: Because the reciprocal of an even number (such as, 1/2, 1/4, 1/6) is

a complex number, you can only raise a negative number to an integer

power or the reciprocal of an odd number.

Find natural antilogarithm: e

.69315 .69315 & i 2.00

Round 2 P 3 to the set decimal format 2 6 3 N & o 0.67

Generate random number* & a 0.86

Store seed value D & a 0.86

Find sine:** sin(11.54°) 11.54 & d 0.20

Find cosine:** cos(120°) 120 & e -0.50

Find tangent:** tan(76°) 76 & f 4.01

Find arcsine:** sin-1

(.2) .2 8 d 11.54

Find arccosine:** cos-1

(-.5) .5 S 8 e 120.00

Find arctangent:** tan-1

(4) 4 8 f 75.96

Find hyperbolic sine: sinh(.5) .5 & c d 0.52

Find hyperbolic cosine: cosh(.5) .5 & c e 1.13

Find hyperbolic tangent: tanh(.5) .5 & c f 0.46

Find hyperbolic arcsine: sinh-1

(5) 5 & c 8 d 2.31

Find hyperbolic arccosine: cosh-1

(5) 5 & c 8 e 2.29

Find hyperbolic arctangent: tanh-1

(.5) .5 & c 8 f 0.55

To Press Display

Parentheses 9 :

Use parentheses to control the order in which the calculator evaluates a

numeric expression in division, multiplication, powers, roots, and

logarithm calculations. The calculator includes up to 15 levels of

parentheses and up to 8 pending operations.

Note: You do not have to press : for expressions ending in a series of

closed parentheses. Pressing N closes parentheses automatically,

evaluates the expression, and displays the final result. To view

intermediate results, press : once for each open parenthesis.

Factorial & g

The number for which you compute a factorial must be a positive integer

less than or equal to 69.

Random Numbers & a

The calculator generates a random real number between zero and one

(0<x<1) from a uniform distribution.

You can repeat a sequence of random numbers by storing a seed value in

the random number generator. Seed values help you recreate

experiments by generating the same series of random numbers.

To store a seed value, key in an integer greater than zero and press D

& a.

Combinations & s

The calculator computes the number of combinations of n items taken r

at a time. Both the n and r variables must be greater than or equal to 0.

Permutations & m

The calculator computes the number of permutations of n items taken r

at a time. Both the n and r variables must be greater than or equal to 0.

Rounding & o

The calculator computes using the rounded, displayed form of a number

instead of the internally stored value.

nCr n!

n – r ! r!

= -----------------------------

nPr n!

n – r !

= ------------------

For example, working in the Bond worksheet, you might want to round a

computed selling price to the nearest penny (two decimal places) before

continuing your calculation.

Note: The calculator stores values to an accuracy of up to 13 digits. The

decimal format setting rounds the displayed value but not the

unrounded, internally stored value. (See “Choosing the Number of

Decimal Places Displayed” on page 4.)

Scientific Notation ;

When you compute a value in the standard-decimal format that is either

too large or small to be displayed, the calculator displays it in scientific

notation, that is, a base value (or mantissa), followed by a blank space,

followed by an exponent.

With AOS™ selected, you can press ; to enter a number in scientific

notation. (See “Choosing Calculation Methods” on page 5.)

For example, to enter 3 Q 103, key in 3 < 10 ; 3.

Memory Operations

Clearing Memory

Clearing memory before you begin a new calculation is a critical step in

avoiding errors.

• To clear an individual memory, store a zero value in it.

• To clear all 10 calculator memories, press & { & z.

Storing to Memory

To store a displayed value to memory, press D and a numeric key (0–9).

• The displayed value replaces any previous value stored in the

memory.

• The Constant Memory feature retains all stored values when you

turn off the calculator.

Recalling From Memory

To recall a number stored in memory, press J and a numeric key (0–9).

Note: The recalled number remains in memory.

Memory Examples

Memory Arithmetic

Using memory arithmetic, you can perform a calculation with a stored

value and store the result with a single operation.

You can store values in any of 10 memories using the

standard calculator keys.

Note: You can also use the Memory worksheet. (See

“Memory Worksheet” on page 82.)

• You can store in memory any numeric value within the

range of the calculator.

• To access a memory M0 through M9, press a numeric

key (0 through 9).

To Press

Clear memory 4 (by storing a zero value in it) 0 D 4

Store 14.95 in memory 3 (M3) 14.95 D 3

Recall a value from memory 7 (M7) J 7

Overview of Calculator Operations 13

• Memory arithmetic changes only the value in the affected memory

and not the displayed value.

• Memory arithmetic does not complete any calculation in progress.

The table lists the available memory arithmetic functions. In each case,

the specified memory stores the result.

Calculations Using Constants

Example: Multiply 3, 7, and 45 by 8

To Press

Add the displayed value to the value stored in memory 9

(M9).

D H 9

Subtract the displayed value from the value stored in

memory 3 (M3).

D B 3

Multiply the value in memory 0 (M0) by the displayed value. D < 0

Divide the value in memory 5 (M5) by the displayed value. D 6 5

Raise the value in memory 4 (M4) to the power of the

displayed value.

D ; 4

To store a constant for use in repetitive calculations, enter

a number and an operation, and then press & `.

To use the stored constant, key in a value and press N.

Note: Pressing a key other than a number or N clears the

constant.

To Press Display

Clear the calculator. & U 0.00

Enter the value for the first calculation. 3 3

Enter the operation and a constant value. < 8 8

Store the operation and value, and then

calculate.

& ` N 24.00

Calculate 7 Q 8. 7 N 56.00

Compute 45 Q 8. 45 N 360.00

Keystrokes for Constant Calculations

This table shows how to create a constant for various operations.

*The letter c denotes the constant value.

**Repeat constant calculations with n N.

Last Answer Feature

To display the last answer computed, press &x.

Note: The calculator changes the value of the last answer whenever it

calculates a value automatically or whenever you:

• Press ! to enter a value.

• Press % to compute a value.

• Press N to complete a calculation.

Example: Using the Last Answer in a Calculation

To* Press**

Add c to each subsequent entry n H & ` c N

Subtract c from each subsequent entry n B & ` c N

Multiply each subsequent entry by c n < & ` c N

Divide each subsequent entry by c n 6 & ` c N

Raise each subsequent entry to the power of c n ; & ` c N

Add c% of each subsequent entry to that entry n H & ` c 2 N

Subtract c% of each subsequent entry from the

entry

n B & ` c 2 N

Use the Last Answer (ANS) feature with problems that call

repeatedly for the same value or to copy a value:

• From one place to another within the same worksheet

• From one worksheet to another

• From a worksheet to the standard-calculator mode

• From the standard-calculator mode to a worksheet

To Press Display

Key in and complete a calculation 3 H 1 N 4.00

Note: To clear variables selectively, see the specific worksheet chapters in

this guidebook.

Resetting the calculator:

• Clears the display, all 10 memories, any unfinished

calculations, and all worksheet data.

• Restores all default settings

• Returns operation to the standard-calculator mode

To clear Press

One character at a time, starting with the last digit

keyed in

*

An incorrect entry, error condition, or error

message

P

Correcting Entry Errors

Example: You mean to calculate 3 Q 1234.56 but instead enter 1234.86.

The prompted worksheet and reset default values & z

Calculator format settings and reset default values & |

& z

• Out of the prompted worksheet and return to

standard-calculator mode

• All pending operations in standard-calculator

mode

& U

• In a prompted worksheet, the variable value

keyed in but not entered (the previous value

appears)

• Any calculation started but not completed

P P

TVM worksheet variables and reset default values & U

& ^

One of the 10 memories (without affecting the

others)

Q D and a

memory number

key (0–9)

You can correct an entry without clearing a calculation, if

you make the correction before pressing an operation key

(for example, H or 4).

• To clear the last digit displayed, press *.

• To clear the entire number displayed, press P.

Note: Pressing P after you press an operation key clears

the calculation in progress.

To Press Display

Begin the expression. 3 < 3.00

Enter a number. 1234.86 1,234.86

Erase the entry error. * * 1,234.

Key in the correct number. 56 1,234.56

Compute the result. N 3,703.68

To clear Press

Math Operations

When you select the chain (Chn) calculation method, the calculator

evaluates mathematical expressions (for example, 3 + 2 Q 4) in the order

that you enter them.

Examples of Math Operations

These operations require you to press N to complete.

These operations do not require you to press N to complete.

To Press Display

Add 6 + 4 6 H 4 N 10.00

Subtract 6 N 4 6 B 4 N 2.00

Multiply 6 Q 4 6 < 4 N 24.00

Divide 6 P 4 6 6 4 N 1.50

Find universal power: 3

1.25 3 ; 1.25 N 3.95

Use parentheses: 7 Q (3 + 5) 7 < 9 3 H 5 : N 56.00

Find percent: 4% of $453 453 < 4 2 N 18.12

Find percent ratio: 14 to 25 14 6 25 2 N 56.00

Find price with percent add-on:

$498 + 7% sales tax

498 H 7 2

N

34.86

532.86

Find price with percent discount:

$69.99 N 10%

69.99 B 10 2

N

7.00

62.99

Find number of combinations where:

n = 52, r = 5

52 & s 5 N 2,598,960.00

Find number of permutations where:

n = 8, r = 3

8 & m 3 N 336.00

To Press Display

Square 6.3

2 6.3 4 39.69

Find square root: 15.5 3 3.94

Find reciprocal: 1/3.2 3.2 5 0.31

Find factorial: 5! 5 & g 120.00

Find natural logarithm: ln 203.45 203.45 > 5.32

15.5

* The random number you generate might be different.

** Angles can be computed in degrees or radians. Examples show

angles in degrees. (See “Choosing the Angle Units” on page 5.)

Universal Power ;

Press ; to raise the displayed positive number to any power (for

example, 2-5 or 2(1/3)).

Note: Because the reciprocal of an even number (such as, 1/2, 1/4, 1/6) is

a complex number, you can only raise a negative number to an integer

power or the reciprocal of an odd number.

Find natural antilogarithm: e

.69315 .69315 & i 2.00

Round 2 P 3 to the set decimal format 2 6 3 N & o 0.67

Generate random number* & a 0.86

Store seed value D & a 0.86

Find sine:** sin(11.54°) 11.54 & d 0.20

Find cosine:** cos(120°) 120 & e -0.50

Find tangent:** tan(76°) 76 & f 4.01

Find arcsine:** sin-1

(.2) .2 8 d 11.54

Find arccosine:** cos-1

(-.5) .5 S 8 e 120.00

Find arctangent:** tan-1

(4) 4 8 f 75.96

Find hyperbolic sine: sinh(.5) .5 & c d 0.52

Find hyperbolic cosine: cosh(.5) .5 & c e 1.13

Find hyperbolic tangent: tanh(.5) .5 & c f 0.46

Find hyperbolic arcsine: sinh-1

(5) 5 & c 8 d 2.31

Find hyperbolic arccosine: cosh-1

(5) 5 & c 8 e 2.29

Find hyperbolic arctangent: tanh-1

(.5) .5 & c 8 f 0.55

To Press Display

Parentheses 9 :

Use parentheses to control the order in which the calculator evaluates a

numeric expression in division, multiplication, powers, roots, and

logarithm calculations. The calculator includes up to 15 levels of

parentheses and up to 8 pending operations.

Note: You do not have to press : for expressions ending in a series of

closed parentheses. Pressing N closes parentheses automatically,

evaluates the expression, and displays the final result. To view

intermediate results, press : once for each open parenthesis.

Factorial & g

The number for which you compute a factorial must be a positive integer

less than or equal to 69.

Random Numbers & a

The calculator generates a random real number between zero and one

(0<x<1) from a uniform distribution.

You can repeat a sequence of random numbers by storing a seed value in

the random number generator. Seed values help you recreate

experiments by generating the same series of random numbers.

To store a seed value, key in an integer greater than zero and press D

& a.

Combinations & s

The calculator computes the number of combinations of n items taken r

at a time. Both the n and r variables must be greater than or equal to 0.

Permutations & m

The calculator computes the number of permutations of n items taken r

at a time. Both the n and r variables must be greater than or equal to 0.

Rounding & o

The calculator computes using the rounded, displayed form of a number

instead of the internally stored value.

nCr n!

n – r ! r!

= -----------------------------

nPr n!

n – r !

= ------------------

For example, working in the Bond worksheet, you might want to round a

computed selling price to the nearest penny (two decimal places) before

continuing your calculation.

Note: The calculator stores values to an accuracy of up to 13 digits. The

decimal format setting rounds the displayed value but not the

unrounded, internally stored value. (See “Choosing the Number of

Decimal Places Displayed” on page 4.)

Scientific Notation ;

When you compute a value in the standard-decimal format that is either

too large or small to be displayed, the calculator displays it in scientific

notation, that is, a base value (or mantissa), followed by a blank space,

followed by an exponent.

With AOS™ selected, you can press ; to enter a number in scientific

notation. (See “Choosing Calculation Methods” on page 5.)

For example, to enter 3 Q 103, key in 3 < 10 ; 3.

Memory Operations

Clearing Memory

Clearing memory before you begin a new calculation is a critical step in

avoiding errors.

• To clear an individual memory, store a zero value in it.

• To clear all 10 calculator memories, press & { & z.

Storing to Memory

To store a displayed value to memory, press D and a numeric key (0–9).

• The displayed value replaces any previous value stored in the

memory.

• The Constant Memory feature retains all stored values when you

turn off the calculator.

Recalling From Memory

To recall a number stored in memory, press J and a numeric key (0–9).

Note: The recalled number remains in memory.

Memory Examples

Memory Arithmetic

Using memory arithmetic, you can perform a calculation with a stored

value and store the result with a single operation.

You can store values in any of 10 memories using the

standard calculator keys.

Note: You can also use the Memory worksheet. (See

“Memory Worksheet” on page 82.)

• You can store in memory any numeric value within the

range of the calculator.

• To access a memory M0 through M9, press a numeric

key (0 through 9).

To Press

Clear memory 4 (by storing a zero value in it) 0 D 4

Store 14.95 in memory 3 (M3) 14.95 D 3

Recall a value from memory 7 (M7) J 7

Overview of Calculator Operations 13

• Memory arithmetic changes only the value in the affected memory

and not the displayed value.

• Memory arithmetic does not complete any calculation in progress.

The table lists the available memory arithmetic functions. In each case,

the specified memory stores the result.

Calculations Using Constants

Example: Multiply 3, 7, and 45 by 8

To Press

Add the displayed value to the value stored in memory 9

(M9).

D H 9

Subtract the displayed value from the value stored in

memory 3 (M3).

D B 3

Multiply the value in memory 0 (M0) by the displayed value. D < 0

Divide the value in memory 5 (M5) by the displayed value. D 6 5

Raise the value in memory 4 (M4) to the power of the

displayed value.

D ; 4

To store a constant for use in repetitive calculations, enter

a number and an operation, and then press & `.

To use the stored constant, key in a value and press N.

Note: Pressing a key other than a number or N clears the

constant.

To Press Display

Clear the calculator. & U 0.00

Enter the value for the first calculation. 3 3

Enter the operation and a constant value. < 8 8

Store the operation and value, and then

calculate.

& ` N 24.00

Calculate 7 Q 8. 7 N 56.00

Compute 45 Q 8. 45 N 360.00

Keystrokes for Constant Calculations

This table shows how to create a constant for various operations.

*The letter c denotes the constant value.

**Repeat constant calculations with n N.

Last Answer Feature

To display the last answer computed, press &x.

Note: The calculator changes the value of the last answer whenever it

calculates a value automatically or whenever you:

• Press ! to enter a value.

• Press % to compute a value.

• Press N to complete a calculation.

Example: Using the Last Answer in a Calculation

To* Press**

Add c to each subsequent entry n H & ` c N

Subtract c from each subsequent entry n B & ` c N

Multiply each subsequent entry by c n < & ` c N

Divide each subsequent entry by c n 6 & ` c N

Raise each subsequent entry to the power of c n ; & ` c N

Add c% of each subsequent entry to that entry n H & ` c 2 N

Subtract c% of each subsequent entry from the

entry

n B & ` c 2 N

Use the Last Answer (ANS) feature with problems that call

repeatedly for the same value or to copy a value:

• From one place to another within the same worksheet

• From one worksheet to another

• From a worksheet to the standard-calculator mode

• From the standard-calculator mode to a worksheet

To Press Display

Key in and complete a calculation 3 H 1 N 4.00