1. Place value can help you understand and write and compare decimal numbers.

2. Ex. 1
Write each decimal in standard form, expanded form, and words.
A (standard form)
B (expanded form)
Expanded form:
Word form:
one and seven hundredths
Standard form:
0.0369
Word form:
three hundred sixty-nine ten-thousandths

3. Write in standard form and expanded form.
fourteen and eight hundredths
One and twelve hundredths
Six thousand eighty-seven ten thousandths

4. Write in expanded form and word form.
5) 11.02 6)
7) .01

5. Ex. 8: Earth Science Application
The star Wolf 359 has an apparent magnitude of Suppose another star has an apparent magnitude of Which star has the smaller magnitude?
Line up the decimal points.
Start from the left and compare the digits.
13.50
Look for the first place where the digits are different.
13.05
0 is less than 5.
13.05 < 13.50
The star that has an apparent magnitude of has the smaller magnitude.

6. Order the decimals from least to greatest.
Ex. 9
Order the decimals from least to greatest.
16.67, 16.6, 16.07

7. Graph the numbers on a number line.
Example 9 Continued
Graph the numbers on a number line.
16.6
16.67
16.07
The numbers are ordered when you read the number line from left to right. The numbers in order from least to greatest are 16.07, 16.6, and