Your SlideShare is downloading. ×
2.7 find square roots and compare real numbers day 1
2.7 find square roots and compare real numbers day 1
2.7 find square roots and compare real numbers day 1
2.7 find square roots and compare real numbers day 1
2.7 find square roots and compare real numbers day 1
2.7 find square roots and compare real numbers day 1
2.7 find square roots and compare real numbers day 1
2.7 find square roots and compare real numbers day 1
2.7 find square roots and compare real numbers day 1
2.7 find square roots and compare real numbers day 1
2.7 find square roots and compare real numbers day 1
2.7 find square roots and compare real numbers day 1
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×
Saving this for later? Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime – even offline.
Text the download link to your phone
Standard text messaging rates apply

2.7 find square roots and compare real numbers day 1

450

Published on

Published in: Technology, Business
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
450
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
9
Comments
0
Likes
0
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
No notes for slide

Transcript

  • 1. Finding Square Roots and Comparing Real Numbers
    Section 2.7
    P. 110
  • 2. Objectives
    Evaluate & approximate square roots
    Looking at the number “sets” again and understanding the members of each set.
  • 3. Square root: If b2 = a, then b is a square root of a
    Example:
    If 32 = 9, then 3 is a square root of 9.
  • 4. Vocabulary:
    Positive square root
    Negative square root
    Radicand
    RadicalSymbols:
    Undefined – why??
    ±
  • 5. More vocabulary:
    Perfect Squares – numbers whose square roots are integers or quotients of integers
    Irrational Number – a number that cannot be written as the quotient of two integers (it never terminates or repeats)
    REALS - the set of all rational and irrational numbers. (see P. 112)
  • 6. Evaluate & approximate square roots
  • 7. Evaluate & approximate square roots
    Approximate the square root to the nearest integer
  • 8. Looking at the number “sets” again and understanding the members of each set
    Counting
  • 9. Looking at the number “sets” again and
    understanding the members of each set
    Tell whether each of the following numbers is a real number, a rational number, an irrational number, an integer, or a whole number: , , – .
    Integer?
    Real Number?
    Whole Number?
    Irrational Number?
    Rational Number?
    Number



    24
    81
    100

    No
    No
    Yes
    No
    Yes
    24
    Yes
    Yes
    Yes
    No
    Yes

    100
    No
    Yes
    No
    Yes
    Yes

    81
    EXAMPLE 3
  • 10. 9
    9
    9.
    Tell whether each of the following numbers. A rational
    number,an irrational number, an integer, or a whole
    number: ,5.2, 0, , 4.1,. There order the
    number from least to greatest.
    2
    2



    7

    20
    20
    
    4.4
    =
    0

    7
    2.6

    =
    4.1
    –2
    –8
    –1
    4
    3
    1
    2
    –3
    –4
    –5
    –6
    –7
    –9
    5
    0
    5.2
    Looking at the number “sets” again and understanding the members of each set
    EXAMPLE 4
    Graph and order real numbers
    GUIDED PRACTICE
    SOLUTION
    Begin by graphing the numbers on a number line.
  • 11. Looking at the number “sets” again and
    understanding the members of each set
    ,
    4
    4
    ,
    ,
    Order the numbers from least to greatest:

    3
    3
    .
    ,
    –2.5
    .

    5

    13

    9

    5

    9

    13
    ANSWER
    Read the numbers from left to right:
    –2.5,

    ,
    ,
    ,
    EXAMPLE 4
    SOLUTION
    Begin by graphing the numbers on a number line.
  • 12. Assignment: P. 113 (#1-27)
    May want to use a chart for 24-27
    Integer?
    Real Number?
    Whole Number?
    Irrational Number?
    Rational Number?
    Number

    No
    No
    Yes
    No
    Yes
    24
    Yes
    Yes
    Yes
    No
    Yes

    100
    No
    Yes
    No
    Yes
    Yes

    81

×