Comparing and Ordering Decimals

1
Comparing and Ordering Decimals

• Lesson 1-3

2
Using Models

• If you are comparing tenths to hundredths, you
  can use a tenths grid and a hundredths grid.
  Here, you can see that 0.4 is greater than 0.36.

3
Using a Number Line

• Determine the highest and lowest number, and then
  draw tenths. If hundredths are necessary, draw
  those.
• Example Put the following numbers in order on
  the number line 1.4 1.65 1.58 1.84 1.8
• In this example, the number line must be between
  1.4 and 1.84.

4
1.4
1.65
1.58
1.84
1.8
1.5
1.6
1.7
First, fill in the tenths.
Then, fill in the hundredths.
Place the decimals on the line.
Now the decimals are in order.
5
The Easy Way

• Line up the numbers vertically by the decimal
  point.
• Add 0 to fill in any missing spaces.
• Compare from left to right.

6
Put these numbers in order12.5 12.24 11.96
12.36
12 . 5
0
Fill in the missing space with a zero.
12 . 24
11 . 96
12 . 36
11.96 lt 12.24 lt 12.36 lt 12.5
7
Homework Time
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