1. Comparing and Ordering Decimals
When Will I Ever Do That???!!!

2. McDonald’s Menu…. I’m Lovin It!!
Double Cheeseburger: $ .99
Big Mac Value Meal: $ 4.79
Chicken McNuggets Meal: $ 3.80
Small Drink: $ .99
McFlurry: $ 1.97
Salad: $ 4.80
2 Cheeseburger Meal: $ 3.70
Ice Cream Cone: $ .87

3. Order Up! Least Expensive to Most Expensive
Ice Cream Cone
Double Cheeseburger:
Small Soft Drink:
McFlurry:
2 Cheeseburger Meal:
Chicken McNuggets Meal:
Big Mac Value Meal:
Chicken Salad:

4. Place Value 1,000 100 10 1 0.1 0.01 0.001 0.0001 Tens Thousands
Hundreds
Ones
Tenths
Hundredths
Thousandths
Ten-thousandths

5. What Do I Mean Compare Decimals?
When we compare we use terms such as:
Less than <
Greater than >
Equal to =

6. Sara’s score was less than Danny’s score.
Half Pipe Results
Compare Sara’s score with Danny’s score.
Line Up Decimal Points
Sara:
Danny:
Add zeroes if needed.
Start at the left and find the first place where the digits are different.
Sara’s score was less than Danny’s score.
Sara
42.1
Danny
42.5
Ross
42.0
Bethany
40.7
Jacob
46.1

7. Let’s Try Using A Number Line
Sara
42.1
Danny
42.5
Ross
42.0
Bethany
40.7
Jacob
46.1
42.0
42.1
42.2
42.3
42.4
42.5
Numbers to the right are greater than numbers to the left. Since 42.5 is to the right of 42.1 we have:
42.5 > 42.1 OR
42.1 < 42.5

8. To find it you have to identify the number pattern.
Number Line
1.2 .6 A
What is the value of A?
To find it you have to identify the number pattern.
How do I get from .6 to 1.2?

9. Number Line Example Find ‘a’ on the number line below.
Find ‘b’ on the number line below.
9.0 a
13.0 b
11.5
10.0

10. Equivalent Decimals
Decimals that name the same number are called equivalent decimals.
0.60 and 0.6
Are these the same???

11. 0.60
0.6 =

12. 15, 14.95, 15.8, 15.01
Ordering Decimals:
First, line up the decimal points
15.00
14.95
15.80
15.01
Second, add zeroes if needed.
Finally, compare the decimals. Always start from the left!!
Answer:14.95, 15, 15.01, 15.8

13. Examples: Order these numbers from greatest to least
35.06, 35.7, 35.5,
Order these numbers from least to greatest
0.018, 0.013, 0.28, 0.205, 0.035
Compare, use these symbols < , >, =