Pre-Algebra Chapter 6 - Ramsey School District

Standardized
Test Practice
Extending
the Lesson
49. CRITICAL THINKING Marty and Spencer each saved money earned from
shoveling snow. The ratio of Marty’s money to Spencer’s money is 3:1. If
Marty gives Spencer $3, their ratio will be 1:1. How much money did
Marty earn?
50. WRITING IN MATH Answer the question that was posed at the beginning
of the lesson.
How are ratios used in paint mixtures?
Include the following in your answer:
• an example of a ratio of blue to yellow paint that would result in a
darker shade of green, and
• an example of a ratio of blue to yellow paint that would result in a
lighter shade of green.
51. Which ratio represents the same relationship as for every 4 apples, 3 of them
are green?
A 9:16 B 3:4 C 12:9 D 6:8
52. Joe paid $2.79 for a gallon of milk. Find the cost per quart of milk.
A $0.70 B $1.40 C $0.93 D $0.55
53. Many objects such as credit cards or
phone cards are shaped like golden
rectangles.
a. Find three different objects that are
close to a golden rectangle. Make a
table to display the dimensions
and the ratio found in each object.
A golden rectangle is a
rectangle in which the
ratio of the length to the
width is approximately
1.618 to 1. This ratio is
called the golden ratio.
.
b. Describe how each ratio compares to the golden ratio.
c. RESEARCH Use the Internet or another source to find three places
where the golden rectangle is used in architecture.
Maintain Your Skills
Mixed Review
State whether each sequence is arithmetic, geometric, or neither. Then state
the common difference or common ratio and write the next three terms of
the sequence. (Lesson 5-10)
54. –3, 6, –12, 24, … 55. 12.1, 12.4, 12.7, 13, …
ALGEBRA Solve each equation. (Lesson 5-9)
56. 3.6 x – 7.1 57. y 3 4 2 3 58. 4.8 6z 59. 3 8 w 5
60. Find the quotient of 1 1 7 and 4 . (Lesson 5-4)
7
Write each number in scientific notation. (Lesson 4-8)
61. 52,000,000 62. 42,240 63. 0.038
Getting Ready for
the Next Lesson
64. Write 8 (k 3) · (k 3) using exponents. (Lesson 4-2)
PREREQUISITE SKILL Solve each equation.
(To review solving equations, see Lesson 3-4.)
65. 10x 300 66. 25m 225 67. 8k 320
68. 192 4t 69. 195 15w 70. 231 33n
268 Chapter 6 Ratio, Proportion, and Percent