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Name
Date
Rational Numbers
Class
Practice TEK 8.2D, 8.3C and 8.4B
1. The areas of 4 rectangles in square centimeters are listed below. Write the areas in order from least to greatest?
3.2
3.08
3.18
3 1/8
2. Determine the largest of the following real numbers.
√30, -5, √14, -6, 6.03, 2π
3. Four numbers in scientific notation are given below. When number in the list is the least?
3.1 x 100
4.2 x 10-3
8.1 x 102
6.4 x 10-1
4. Which point on the number line best represents √67?
5. The graph shows the relationship between the number of
tickets to a matinee movie bought and the cost.
What is the unit cost in dollars per ticket?
6. A biker can ride 2.5 miles in 15 minutes.
What is the unit rate?
7. Triangle DEF is similar to triangle ABC. What is the length of segment AC?
8. The corresponding sides of two triangles are proportional. When statement best describes the two triangles?
A.
B.
C.
D.
The triangles must be similar.
The triangles might be similar.
The triangles cannot be congruent.
The triangles cannot be similar.
9.
Which line graphed has a slope of 0.5?
10.
Margie bought 5 shirts on sale for $40. She graphed the
relationship between the cost of the shirts and the
number of shirts. She labeled the vertical axis “Cost”
and she labeled the horizontal axis “Number of Shirts”.
The slope of the line is the unit cost per shirt. What is
the slope of the graph?
11.
The following advertised prices were graphed on a coordinate grid to show the cost of various numbers of
shirts based on the advertised price. What is the cost of each shirt (slope)?
a. 3 shirts for $24 ____________
b. 4 shirts for $50 ____________
c. 5 shirts for $60 ____________
d. 2 shirts for $20 ____________
12. The chart below shows the perimeters of six triangles the class created for a class project. What is the mean
absolute deviation of this data?
13. Which statement is NOT true?
A.
B.
C.
D.
Every integer is a real number.
Every whole number is an integer.
Every integer is a rational number.
Every decimal is an irrational number.
14. On the number line, indicate the best rational approximation of √135.
ANSWERS
1. 3.08, 3 1/8, 3.18, 3.2
2. 2π
3. 8.1 x 102
4. C
5. $2
6. 6 miles a minute
7. 20 cm
8. A
9. line s
10. m = 1/8
11. A $8 each B. $12.50 each C. $12 each D. $10 each
12. 6.66
13. D
14. 11.6