Texas Instruments TI-10 User Manual



TI-10

Calculator and Arithmetic Trainer

General Information

The TI-10 has two power sources — battery and solar. It operates in well-lit areas using the solar cell, and it operates in other light settings using the battery.

Examples

keystroke sequences that demonstrate many of TI-10 functions and capabilities. Before starting each problem set, reset and clear the TI-10 by pressing ensure that your displays are the same as those shown in the examples. In Problem Solving displays will vary from those shown in the examples because the problems presented by the TI-10 are random.

On/Off

To turn the TI-10 on, press −. If the TI-10 is on, press If you do not press any keys for about five minutes, the

Automatic Power Down™ (APD™) feature turns off the TI-10 automatically. After APD, press The display, all pending operations, settings, and memory (including history) are retained.

Two-Line Display and Scrolling

The TI-10 has a two-line display that shows up to 11 characters at a time on each line. Entries that do not fit on the first line wrap to the second. When the second line is filled, the characters scroll up.

Entries can be up to 88 characters. (Stored Operation), the limit is 44 characters. For (Problem Solving) wrap; entries cannot exceed 11 characters.

When a result exceeds the capacity of the display, it is shown in scientific notation. However, if the result is greater than 10 is less than 10

Scroll using these keys:

Clearing, Correcting, and Resetting

”

| |

: See the “Examples” page for problems with

. This helps to

b”

AUTO

mode, however,

−

to turn it off.

−

to power up again.

−

# $

Exceptions

MAN

(manual) mode, entries do not

OVERFLOW ERROR

, an

UNDERFLOW ERROR

, an

", !

Press " and ! to scroll through entries or to move the underline from one item to another within a menu.

Press # and $ to scroll through history or to move between menus when the menus are displayed.

Deletes the character to the left of the cursor.

Only clears the display and error condition. Does not clear value from memory, mode settings, etc.

Clears the value from memory. Resets the TI-10 clearing the calculator

completely and restoring all default settings. Press ” to clear the display.

You can also reset by:

Using the Calculator/Problem Solving menus.

Pressing − and ” simultaneously.

is displayed; if the result

, #, and $.

MEM CLEARED

RESET

menu. See

Op1

: For

‹

is displayed.

” w

is displayed.

Display Indicators

Indicator Definition

‹

Fix M Op1 Auto

TI-10 is in the Problem Solving tool. TI-10 is in the Place Value feature.

TI-10 is rounding results. A value other than zero is in memory. Stored operation is active. Problem Solving (‹) is in

mode. When using W, result will be displayed in

decimal format. More entry history or menus are available.

Press An entry extends beyond the capacity of the

display. Press

(up) or $ (down) to access.

!or"

AUTO

to scroll.

(automatic)

Calculator / Problem Solving Menus

Press Calculator Tool

‡

$$$

‡

Press Problem Solving Tool (AUTO)

‡

Press Problem Solving Tool (MAN)

‡"® ‡"®$

Once in a menu:

To underline a menu item, press !or".

To select the underlined item, press ®.

To exit a menu, press

Note:

To select an option from the Place Value menu, the TI-10 must be in mode.

Pressing temporarily displays the Scoreboard before the

MAN

‡

menu is displayed.

+ 1 Y

AUTO 1 +

AUTO MAN 11 -.

‡

(Problem Solving)

‹

while in the ‹ (Problem Solving) tool

(Division result format)

2 3

- Q P ?

- 1 -.

(Show or hide OP)

(Clear stored operation)

(Reject or select

MAN

(Automatic or Manual) (Level of Difficulty)

(Type of Operation)

(Automatic or Manual) (Place Value feature)

MAN

RESET

(manual)

AUTO /

)

Order of Operations

The TI-10 uses the Equation Operating System (EOS evaluate expressions.

1st Expressions inside parentheses. 2nd Functions that require a closing parenthesis ) and

precede the argument. 3rd Negation (N). 4th Multiplication, implied multiplication, division. 5th Addition and subtraction. 6th Z completes all operations.

Basic Arithmetic

q, h, i, j,

k, l, m, n o, p

T, U, V,

r M

T U V W r M X Y Z

Enters the numerals 0 through 9.

Adds, subtracts, multiplies, divides. Inserts a decimal point. Enters a negative sign. (Does not act as

an operator.) Opens, closes a parenthetical

expression. Completes all operations.

) to

-1-

Division

When you divide a positive whole number by a positive whole number using

, where Q is the quotient and R is the remainder. For

r R

example, if you are in the QR setting: 12

, the result is displayed in the form

5 = 2 r 2.

If you use the result of QR division in a subsequent calculation, the TI-10 uses only the quotient. The remainder is dropped.

For decimal results, select the decimal division setting by pressing previous answer as a decimal. For example: 12

Memory

‡"

. Press ‡ ® to see the

5 = 2.4.

` a |

After a calculation, press ` to add the displayed result to the value in memory or a to subtract the displayed result from the value in memory. Whenever memory contains a value other than 0, M displays on the screen.

To recall the value from memory for use in a calculation,

press To clear memory, press

Stored Operation

stores an operation with a constant value. You can

Op1

once.

twice.

›

then repeat this stored operation as many times as desired by pressing a single key —

1. Press ›.

2. Enter the operator first (+, -,

›

3. Press

4. Initialize with a starting value.

5. Each time you press applied.

›

Q, P

) and then the number.

›

, the operation with the constant is

The computation with the stored operation appears in the first line of the display, and the result appears in the second line.

To hide the computation line:

‡$"

1. Press

‡

2. Press

3. Continue pressing

(to underline ?, if necessary) ®.

again to return to the stored operation.

›

If the expression does not fit on the line, it will not show. When display space permits, a counter on the second line shows how many times you have pressed

To clear the contents of

‡

1. Press

2. Select Y (yes), if necessary.

3. Press

4. Press

the TI-10 also clears

”

or ‡ to return to the last result display. Resetting

Rounding

Op1

Š  ‘ ’ “ ˜ ™

›

You can round results using Š in conjunction with the Place Value keys to specify a given number of places. The internally stored value is not rounded. The calculated value is padded with zeros as needed. You must press

each

time you want to change the number of places.

Keys Action

Š 

Š ‘

Š ’

Š “

Š ˜

Š ™

Š r

Rounds to thousands. Rounds to hundreds. Rounds to tens. Rounds to ones. Rounds to nearest tenth. Rounds to nearest hundredth. Removes fixed-decimal setting.

These Place Value keys also work with Œ. See Place Value.

Problem Solving

‹  [ \

Problem Solving lets you practice and test your skills. To enter Problem Solving, press You can choose either

AUTO



(automatic) or

MAN

(manual)

mode.

AUTO Mode

‹

(Problem Solving)

mode (the default), the TI-10

AUTO

presents problems with one element missing, for example: 5+2=? or 5+?=7 or 5?2=7. You can select the type of problem and choose from three levels of difficulty. The default is addition at Level 1.

Level of Difficulty

. While in

‹

mode, press

AUTO

‡

to access the menu. Press " or ! to select the level of difficulty (1, 2, or 3). Press ® ‡, and the TI-10 will present problems at the selected level. Or, while in

‹

mode, press c to advance to the next level. After Level

3, pressing c again returns you to Level 1.

Type of Problem

‡

the type of problem — addition (+), subtraction ( multiplication (

‡, and the TI-10 will present problems of the

. While in ‹

mode, press

AUTO

to access the menu. Press " or ! to select

), division (P), or find the operator (?). Press

selected type.

Procedure.

1. Enter an answer and press

2. If your answer is correct, the display shows

3. If your answer is not correct, the display shows

4. The incorrect answer is cleared from the display so you can enter

5. If you enter three incorrect answers to a given problem, the TI-10

Scoreboard

When a problem is presented:

YES

screen, and presents another problem.

whether the correct solution is less than answer that you entered.

another answer to that same problem.

shows the correct answer, clears that problem, and presents a new problem.

, clears the

and indicates

or greater than > the

. The TI-10 shows a Scoreboard after every fifth

problem. Every correct solution you entered registers one

in the Scoreboard, and three incorrect answers in a row

YES

in the Scoreboard. After 100, the

Scoreboard returns to zero. Press

‡

Scoreboard is then replaced by the a few seconds. Press

to display the Scoreboard at any time. The

‡

AUTO / MAN

again to return to the problem.

menu after

MAN Mode

‹

Using

(Problem Solving)

(manual) mode, you can

MAN

compose your own problems.

1. Press ‡ to access the menu.

2. Press

to underline

MAN

3.Press ® ‡. The TI-10 is ready for you to enter your problem and your

solution. The TI-10 accepts only non-negative integers in



this mode. To indicate a missing element, press In

‹

(Problem Solving), press ] to change between

and

AUTO

display when Problem Solving In

‹

MAN

mode.

shows in the top line of the

Auto

AUTO

is selected.

mode, it is possible to enter a problem that has

one solution, multiple solutions, or no solution. The TI-10 tells you how many solutions the problem has.

Problems with one missing element generally have only one solution. You get three tries. After three incorrect answers, the calculator displays the correct answer and then clears the display so you can enter a new problem.

Problems with two missing elements may have multiple solutions. For example: ?+?=5 has 6 solutions; ?x?=24 has 8 solutions. For multiple-solution problems, the question mark replaces the operands. Question marks may not appear in the place of the operator or the answer. These problems are not cleared after a correct solution or after three incorrect answers. Instead, the problem remains so that you can enter other solution sets. To clear the problem at any time, press

When the answer to a problem is not a positive integer (such as

2), the TI-10 indicates that the problem has zero solutions.

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+ 4 hidden pages

Texas Instruments TI-10 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual