1. Splash Screen

2. Five-Minute Check (over Chapter 1) Main Idea and Vocabulary
Key Concepts: Rational Numbers
Example 1: Write a Fraction as a Decimal
Example 2: Write a Repeating Decimal
Example 3: Real-World Example: Round a Repeating Decimal
Example 4: Write a Decimal as a Fraction
Example 5: Write a Decimal as a Fraction
Lesson Menu

3. Express rational numbers as decimals and decimals as fractions.
terminating decimal
repeating decimal
bar notation
Main Idea/Vocabulary

4. KC 1

5. Write a Fraction as a Decimal
Write as a decimal. .1 8 7 5
Divide 3 by 16.
–16 14
–128 12
–112 8
–80
Answer:
Example 1

6. A B C
D. 0.16 A B C D
Example 1

7. Write a Repeating Decimal
You can divide as shown in Example 1 or use a calculator.
– –
ENTER ÷
Answer:
Example 2

8. A. 5.1
B. 5.15
C. 5.2
D. 5.9 A B C D
Example 2

9. Round a Repeating Decimal
AGRICULTURE A farmer lost the fruit on 8 of 15 orange trees because of unexpected freezing temperatures. Find the fraction of the orange trees that did not produce fruit. Express your answer as a decimal rounded to the nearest thousandth.
To find the fraction of trees that did not produce fruit, divide the number of lost trees, 8, by the total number of trees, 15.
ENTER ÷
Look at the digit to the right of the thousandths place. Round down since 3 < 5.
Example 3

10. Round a Repeating Decimal
Answer: The fraction of fruit trees that did not produce fruit was
Example 3

11. SCHOOL In Mrs. Townley’s eighth grade science class, 4 out of 22 students did not turn in their homework. Find the fraction of the students who did not turn in their homework. Express your answer as a decimal rounded to the nearest thousandth. A B C D A B C D
Example 3

12. Write a Decimal as a Fraction
Write 0.32 as a fraction.
0.32 is 32 hundredths.
Simplify.
Answer:
Example 4

13. Write 0.16 as a fraction. A. B. C. D. A B C D
Example 4

14. Write a Decimal as a Fraction
ALGEBRA Write 2.7 as a mixed number.
Let N = 2.7 or Then 10N =
Multiply N by 10 because 1 digit repeats.
Subtract N = to eliminate the repeating part,
Example 5

15. Write a Decimal as a Fraction
10N = –1N =
9N = N – 1N = 9N
Divide each side by 9.
Simplify.
Answer:
Example 5

16. ALGEBRA Write 1.7 as a mixed number.C. D. A B C D
Example 5

17. End of the Lesson
End of the Lesson

18. Five-Minute Check (over Chapter 1) Image Bank Math Tools
Multiplying Fractions
Multiplying and Dividing Fractions
Resources

19. Evaluate 8 + (20 – 3)(2). A. 22 B. 25 C. 42 D. 50 (over Chapter 1) A B
Five Minute Check 1

20. Evaluate 16 + (–9). A. 25 B. 7 C. –7 D. –25 (over Chapter 1) A B C D
Five Minute Check 2

21. Evaluate –7 – 10. A. 17 B. 3 C. –3 D. –17 (over Chapter 1) A B C D
Five Minute Check 3

22. (over Chapter 1)
A. 90
B. 19
C. –19
D. –90 A B C D
Five Minute Check 4

23. Solve the equation Then check your solution.
(over Chapter 1)
Solve the equation Then check your solution.
A. 40
B. 10
C. –10
D. –40 A B C D
Five Minute Check 5

24. (over Chapter 1)
Yasmine earns $0.25 for each cup of lemonade she sells. She earned $86 last Thursday selling lemonade. How many cups of lemonade did she sell last Thursday?
A. 344
B. 2,150
C. 340
D. 443 A B C D
Five Minute Check 6

25. End of Custom Shows