1. Splash Screen

2. Five-Minute Check (over Lesson 3–1) Main Idea and Vocabulary
Example 1: Compare Decimals
Example 2: Order Decimals
Lesson Menu

3. Compare and order decimals.
inequality
equivalent decimals
Main Idea/Vocabulary

4. Compare Decimals
BASEBALL The table below lists the final winning percents for several American League baseball teams in a recent year. Use > or < to compare New York’s percent with Cleveland’s percent.
Example 1

5. First, line up the decimal points.
Compare Decimals
Method 1 Use place value.
First, line up the decimal points.
New York: 0.594
Cleveland: 0.562
New York: 0.594
Cleveland: 0.562
Then, starting at the left, find the first place the digits differ. Compare the digits.
Answer: Since 9 > 6, >
Example 1

6. Method 2 Use a number line.
Compare Decimals
Method 2 Use a number line.
Numbers to the right are greater than numbers to the left. Since is to the right of 0.562, >
Answer: New York had the higher winning percentage.
Example 1

7. EXAMS In Mr. Smith’s math class, 29
EXAMS In Mr. Smith’s math class, 29.65% of the students earned a grade of “A” at the end of the semester. In Mrs. Dempsey’s class, 29.85% of the students earned a grade of “A” at the end of the semester. Use > or < to compare the percent in Mr. Smith’s class with the percent in Mrs. Dempsey’s class.
29.65% < 29.85%
29.65% > 29.85% A B
Example 1

8. Order 25, 25.1, 24.36, and 25.03 from least to greatest.
Order Decimals
Order 25, 25.1, 24.36, and from least to greatest.
First, line up the decimal points.
Next, annex zeros so all numbers have the same final place value.
Finally, compare and order using place value. 25
25.1
24.36
25.03
25.00
25.10
24.36
25.03
24.36
25.00
25.03
25.10
Answer: The order from least to greatest is 24.36, 25, 25.03, and 25.1.
Example 2

9. Order 71, 71.04, 70.89, and 71.4 from least to greatest.
71.4, 71.04, 71, 70.89
71.4, 71, 71.04, 70.89
70.89, 71.04, 71, 71.4
70.89, 71, 71.04, 71.4 A B C D
Example 2

10. End of the Lesson
End of the Lesson

11. Five-Minute ChecK (over Lesson 3–1) Image Bank Math Tools
Modeling Decimals
Dividing Decimals
Modeling Decimals
Resources

12. twelve and four hundredths twelve and four thousandths
(over Lesson 3-1)
Write in word form.
twelve and four
twelve and four tenths
twelve and four hundredths
twelve and four thousandths A B C D
Five Minute Check 1

13. eight and thirty-seven eight and thirty-seven tenths
(over Lesson 3-1)
Write 8.37 in word form.
eight and thirty-seven
eight and thirty-seven tenths
eight and thirty-seven hundredths
eight and thirty-seven thousandths A B C D
Five Minute Check 2

14. Write forty-eight thousandths in standard form and in expanded form.
(over Lesson 3-1)
Write forty-eight thousandths in standard form and in expanded form.
0.048; (4  0.01) + (8  0.001)
40.008; (4  10) + (8  0.001)
0.0048; (4  0.001) + (8  )
0. 48; (4  0.1) + (8  0.01) A B C D
Five Minute Check 3

15. (over Lesson 3-1)
Write fourteen and five hundred six thousandths in standard form and expanded form.
14, ; (1  10,000) + (4  4,000) + (5  100) + (6  0.006)
14.506; (1  10) + (4  1) + (5  0.1) + (6  0.001)
; (1  10) + (4  1) + (5  0.01) + (6  )
; (1  0.1) + (4  0.01) + (5  0.001) + (6  ) A B C D
Five Minute Check 4

16. (over Lesson 3-1)
Daniel purchased a book for seven dollars and eighty-two cents. Write this amount in standard form.
$782
$82.7
$7.82
$0.782 A B C D
Five Minute Check 5

17. (over Lesson 3-1)
Julia has sapphire earrings that are eight hundredths of a karat in size. Which decimal represents eight hundredths?
0.8
0.08
0.008
0.0008 A B C D
Five Minute Check 6

18. End of Custom Shows