Texas Instruments TI-83 Plus Manual Book page 45

Chapter 1: Number Sense
Student Worksheet Notes with Answers
Overview
Tell students:
1. How to find the
2. How to navigate the application, if they are not yet familiar with the application.
3. To scroll through the
concepts, and tell students to look for them as they go through the
Observations
The
Observations
students how to find the
Students see this screen
with three possible
answers.
Students should show
that they know how to use
the properties of the real
number computations as
shortcuts without the
calculator.
Students see the answers
on the next screen.
Topics In Algebra 1
, or tell them to review the instructions on the worksheet.
Overview
on the calculator. Point out new terms, definitions, and
Overview
help students understand number sense concepts relating to real numbers. Tell
Observations .
Observation 1
Write three different irrational numbers. Students show their
work.
Answers will vary.
Observation 2
Try these problems . . .
Students use the real number properties to solve the problems,
showing their work.
associative ... property:
25 ... 24 = 25 ... (4 ... 6) = (25 ... 4) ... 6 = 100 ... 6 = 600
distributive ... over + property:
8 ... 102 = 8 ... (100 +2) = (8 ... 100) + (8 ... 2) = 800 +16 = 816
distributive ... over N property:
6 ... 46 = 6 ... (50 N 4) = (6 ... 50) N (6 ... 4) = 300 N 24 = 276
© 2001 Texas Instruments
Section 3: Real Numbers
Overview.
Teacher Notes 1-31