Comparing and Ordering Decimals

Using ModelsIf 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.

Using a Number LineDetermine 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; 1.8In this example, the number line must be between 1.4 and 1.84.

First, fill in the tenths.

1.5 1.6 1.7

Then, fill in the hundredths.

Place the decimals on the line.

1.41.651.58 1.841.8

Now the decimals are in order.

1.4; 1.65; 1.58; 1.84; 1.8

The Easy WayUse Place Value!!!

1. Line up the numbers vertically by the decimal point.

2. Add “0” to fill in any missing spaces.

(Annex zero’s)

3. Compare from left to right.

Put these numbers in order: from least to

greatest12.5; 12.24; 11.96; 12.36

12 . 512 . 2411 . 96

12 . 36

Fill in the missing space with a zero.

11.96 , 12.24 , 12.36 , 12.5

0 This is called: Annexing zero