Download Lesson 4 - 1 Practice

Name: ____________________________________________ Date: _______________________
Lesson 4 – 1 Practice
“Let’s Be Rational”
1. Name all the sets of which the given set is a subset.
a. the set of whole numbers
b. the set of positive integers
c. the set of negative rational numbers
d. the set of natural numbers
2. Explain why 2 is a rational number.
𝑎
3. Why does the definition of rational number state the b, the denominator of the rational number 𝑏 ,
cannot equal 0?
4. A rational number is defined as a ratio of two integers. Given that a ratio is a fraction, how can a
decimal be a rational number?
5. Explain why the set of mixed numbers is not a subset of the set of integers.
6. Give an example of each:
a. a rational number that is an integer
b. an integer that is not a whole number
c. a rational number that is not an integer
7. Explain how you know 0.38 is a rational number.
8. Which statement is true?
a. a rational number is always an integer
b. an integer is always a whole number
c. a rational number is always a whole number
d. an integer is always a rational number
9. Three mice are competing in a race.
Mouse A reaches the finish line in 5.65 seconds.
2
Mouse B reaches the finish line in 55 seconds.
2
Mouse C reaches the finish line in 53 seconds.
List the mice in order from fastest to slowest.