1. Comparing and Ordering Decimals
Locate positive rational numbers on a number line and plot pairs of positive rational numbers on a coordinate plane.
Compare positive rational numbers represented in various forms. Use the symbols <, >, and =.

2. I can… Self Assessment Locate numbers on a number line
Compare and order decimals
Self Assessment
5- I can do it without help & teach others.
4- I can do this with no help, but I don’t know if I can explain it.
3- I can do this with a little help.
2- I can do this with a lot of help!
1- I don’t have a clue.

3. Use a Number Line Line Up and Cross Off
2 Methods
Use a Number Line Line Up and Cross Off

4. Using a Number Line
Picture a Metric Ruler or a Number Line to help you locate decimal numbers
Numbers further to the right are larger
Numbers lines help us to compare decimals!

5. Let’s Try Using A Number Line
Half pipe Results
42.0
Sara
42.1
Danny
42.5
Ross
42.0
Bethany
40.7
Jacob
46.1
42.1
42.5
Since 42.5 is to the right of 42.1 we have:
42.5 > 42.1

6. Line Up and Cross Off
First and foremost… You need to place numbers on top of one another making sure to line up the decimal point…
When comparing decimals, you have to look at the whole numbers.
If the whole numbers are the same, then look at the decimal in the tenths place.
Keep looking at the digits until you can identify which is the greatest or least.

7. Order from LEAST to GREATEST 15, 14.95, 15.8, 15.01
Let’s Try…
Order from LEAST to GREATEST 15, 14.95, 15.8, 15.01
First, line up the decimal points 15
14.95
15.8
15.01

8. Order from LEAST to GREATEST 15, 14.95, 15.8, 15.01
Next, use ghost zeros so that each number has the same number of decimal places
15.00
14.95
15.80
15.01

9. Order from LEAST to GREATEST 15, 14.95, 15.8, 15.01
Finally, use place value to compare the decimals. Always start from the left!!
15.00
14.95
15.80
15.01

10. Order from LEAST to GREATEST 15, 14.95, 15.8, 15.01
Finally, use place value to compare the decimals. Always start from the left!!
15.00
14.95
15.80
15.01
1st

11. Order from LEAST to GREATEST 15, 14.95, 15.8, 15.01
Finally, use place value to compare the decimals. Always start from the left!!
15.00
14.95
15.80
15.01
1st

12. Order from LEAST to GREATEST 15, 14.95, 15.8, 15.01
Finally, use place value to compare the decimals. Always start from the left!!
15.00
14.95
15.80
15.01
2nd
1st
4th
3rd

13. Practice Time! Order from least to greatest
Ordering Decimals
Practice Time! Order from least to greatest
Answers
Problems
1.134, 1.341, 1.103
1.103, 1.134, 1.341
14.072, , 14.07
14.07, ,
3.963, 3.63, 3.93
3.63, 3.93, 3.963

14. <
Gallon
Gallon
0.55
0.8

15. >
Gallon
Gallon
0.65
0.37

16. =
Gallon
Gallon
0.9
0.90

17. Practice Time! Order from least to greatest
Comparing Decimals
Practice Time! Order from least to greatest
Answers
Problems
13.5 ____
<
_____
>

18. I can… Self Assessment Locate numbers on a number line
Compare and order decimals
Self Assessment
5- I can do it without help & teach others.
4- I can do this with no help, but I don’t know if I can explain it.
3- I can do this with a little help.
2- I can do this with a lot of help!
1- I don’t have a clue.

19. Daily Check 3.3 in your math notebook Compare using <, >, or =
8.7 ___ 9
13.5 ___
27 ___
___ 34.5
___
Order from least to greatest
22.56, 22.55, 22.5, , 22.48