Ordering Real Numbers
Lesson 1.3
Mrs. Carley
Comparing Irrational Numbers
 Compare: 3 + 5 AND 3 + 5
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1st step: Find the approximate for 3
2nd step: add the approximate of 3 + 5
3rd step: find the approximate of 5
4th step: find the approximate of 3 + 5
Which side the equation is greater than, less than, or equal to?
 Reflect: Page 21 #2
 Your Turn: Page 21 #3-4
Ordering Real Numbers
 Order 22 , 𝝅 +1 , and
1
4
2
 Approximate the 22
 Approximate the value of 𝝅 and then add 1.
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1
Change 4 to a decimal
2
Order from least to greatest:
Make a number line and plot the points.
“Your Turn”: Page 22 #5-6
Math Talk Question
 If real numbers a, b, and c are in order from least to
greatest, what is the order of their opposites from
least to greatest? Explain….
Show on a number line!
Ordering Real Numbers in a RealWorld Context
Four people have found the distance in kilometers
across a canyon using different methods. Their results
are given in the table. Order the distances from
greatest to least.
Juana
Lee Ann
Ryne
Jackson
28
23
4
5.5
5
Plot your answers on a number line!
“Your Turn”: Page 23 #7
1
2