Download Lesson 4-9 PowerPoint

(over Lesson 4-7)
Write 13.7% as a decimal.
A. 0.0137
B. 0.137
C. 1.37
D. 13.7
0%
0%
A
B
1.
2.
3.
4.
0%
C
A
B
C
D
0%
D
(over Lesson 4-7)
A. 72.5
B. 7.25
C. 0.725
D. 0.0725
0%
0%
A
B
1.
2.
3.
4.
0%
C
A
B
C
D
0%
D
(over Lesson 4-7)
Write 0.183 as a percent.
A. 183%
B. 18.3%
C. 1.83%
D. 0.183%
0%
0%
A
B
1.
2.
3.
4.
0%
C
A
B
C
D
0%
D
(over Lesson 4-7)
Write 0.07 as a percent.
A. 0.07%
B. 0.7%
C. 7%
D. 70%
0%
0%
A
B
1.
2.
3.
4.
0%
C
A
B
C
D
0%
D
Main Idea and Vocabulary
Example 1: Compare Rational Numbers
Example 2: Compare Rational Numbers
Example 3: Real-World Example
Concept Summary: Fractions-Decimals-Percents
Example 4: Test Example
• Compare and order fractions, decimals, and
percents(2.1.8A) (M7.A.1.1).
• rational numbers-numbers that can be expressed
as fractions.
• common denominator-a common multiple of the
denominators of 2 or mores fractions.
• least common denominator (LCD)-LCM of the
denominators.
Compare Rational Numbers
Graph each rational number on a number line. Mark off
equal size increment of
between –4 and –3.
Answer: The number line shows that
.
A. >
B. <
C. =
0%
A
1.
2.
3.
0%
B
A
B
C
0%
C
Compare Rational Numbers
12 = 22 ● 3 and 16 = 24. So the LCM is 24 ● 3 or 48. The
LCD of 12 and 16 is 48.
A. >
B. <
C. =
0%
A
1.
2.
3.
0%
B
A
B
C
0%
C
DOGS According to the Pet Food Manufacturer’s
Association, 11 out of 25 people own large dogs and
13 out of 50 people own medium dogs. Do more
people own large or medium dogs?
Answer: A greater fraction of people own large dogs
that own medium dogs.
SEASONS A survey showed that 21 out of 50 people
stated that summer is their favorite season and 13
out of 25 people stated that fall is their favorite
season. Do more people prefer summer or fall?
A. Summer
B. Fall
1.
2.
0%
B
A
0%
A
B
Four frozen dinners had the following amounts of
vegetables:
0.6, 72%, and
Which list shows
the numbers in order from least to greatest?
Read the Item
Write each amount as a decimal. Then compare.
Solve the Item
Answer: So, the answer is C.
The proportion of male students in four classes are
as follows:
Which list shows
the numbers in order from least to greatest?
0%
0%
0%
0%
D
A
B
C
D
C
D.
1.
2.
3.
4.
B
C.
B.
A
A.
GUIDED PRACTICE
Replace each with <, >, or = to make true
sentence.
>
=
1. -4/9 ___
-7/9
2. -1 ¾ _____
-1 6/8
3. The lengths of four insects are:
0.02 inch, 1/8 inch, 0.1 inch, and 2/3
inch. Name from least to greatest.
0.02, 0.1, 1/8, 2/3
End of the Lesson
Five-Minute Check (over Lesson 4–8)
Image Bank
Math Tools
Percents
Prime Factorization