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Texas Instruments TI-15 Teachers Guide
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© 2000 T
EXAS
I
NSTRUMENTS
I
NCORPORATED
TI-15: A Guide for Teachers
81
Converting with percent
Convert 25% to a decimal.
Percent
Press
Display
ª
25
ª
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25ãÚ
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Convert to
Percent
y
Convert
25
100
to a percent.
Press
Display
25
100
¥
y
®
25
100
Convert 3 to a percent.
Press
Display
3
y
®
3àã
300ã
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à
ã
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87
89
Table of Contents
Table of Contents
4
About the Teacher Guide
5
About the TI-15
6
Activities
8
Patterns in Percent
9
Fraction Forms
13
Comparing Costs
18
Division with Quotient/Remainder, Appendix C
22
Number Shorthand
22
Scientific Notation
23
Scientific Notation
24
Appendix D Scientific Notation
25
Related Procedures
27
Constant Operations
27
In the Range
31
Rounding
31
Rounding
33
The Value of Place Value
36
Place Value
36
Place Value
37
Place Value
38
Place Value
39
Place Value
40
What's the Problem
41
How to Use the Ti.15
45
Display, Scrolling, Order of
46
Display, Scrolling, Order of Operations, Parentheses
46
Operations, Parentheses
46
Order of Operations
48
Clearing and Correcting
49
Clearing Entries
50
Mode Menus
52
Basic Operations
55
Entering Negative Numbers
57
Constant Operations
62
Whole Numbers and Decimals
70
Whole Numbers and Decimals
71
Setting the Number of Decimal Places
72
Memory
75
Fractions
78
Converting Fractions to Decimals
83
Percent
87
Powers and Square Roots
95
Finding the Square Root
97
Problem Solving: Auto Mode
101
Problem Solving: Manual Mode
107
Place Value
113
Appendix A
120
Quick Reference to Keys
120
Appendix B
123
Display Indicators
123
Error Messages
124
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Texas Instruments TI-15 Specifications
General
Brand
Texas Instruments
Model
TI-15
Category
Calculator
Language
English
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