Lesson
Quizzes
1-1
Evaluating
Algebraic Expressions
Preview
6-1 Relating Fractions, Decimals, and Percents
6-2 Estimating with Percents
6-3 Finding Percents
6-4 Finding a Number When a Percent is Known
6-5 Applying Percent of Increase and Decrease
6-6 Commission, Sales Tax, and Profit
6-7 Applying Simple and Compound Interest
Holt CA Course 2
6-1
Fractions,Algebraic
Decimals, andExpressions
Percents
1-1Relating
Evaluating
Lesson Quiz: Part I
Find each equivalent value.
1. 3 as a percent
8
2. 20% as a fraction
3.
5
as a decimal
8
37.5%
1
5
0.625
Compare. Write <, >, or =.
7
4. 11
5. 0.650
Holt CA Course 2
30%
97%
>
<
6-1
Fractions,Algebraic
Decimals, andExpressions
Percents
1-1Relating
Evaluating
Lesson Quiz: Part II
6. Write 245%,
1
, 0.133, and 66.6% in order
5
from least to greatest.
1
0.133, 5 , 66.6%, 245%
5. About 342,000 km2 of Greenland’s total area
(2,175,000 km2) is not covered with ice. To the
nearest percent, what percent of Greenland’s
total area is not covered with ice?
16%
Holt CA Course 2
6-2
with Percents
1-1Estimating
Evaluating
Algebraic
Expressions
Lesson Quiz: Part I
Estimate. Possible answers:
1. 34% of 12
4
2. 113% of 80
90
3. Ian had dinner with some friends at a
restaurant. The check for his dinner was
$10.25. If he wants to leave a 20% tip, what
is the total amount Ian should pay?
Possible answer: $12.25
Holt CA Course 2
6-2
with Percents
1-1Estimating
Evaluating
Algebraic
Expressions
Lesson Quiz: Part II
4. Approximately 8% of each batch of jeans
produced at one factory is defective. Ms.
Fleming said that in a batch of 400 jeans,
about 35 jeans would be defective. Estimate to
determine if her number is reasonable.
Explain.
Yes, because 8% of 400 is a little less than
10% of 400. 10% of 400 is 40, and 35 is a
little less than 40.
Holt CA Course 2
6-3 Finding
Percents Algebraic Expressions
1-1
Evaluating
Lesson Quiz: Part I
Find each percent.
1. What percent of 33 is 22? 66 2 %
3
2. Of Earth’s 197 million mi2 of surface area, about
139 million mi2 is water. Find the percent of Earth’s
surface that is covered by water. 70.6%
3. The Ramirez family bought a large bag of oranges
during their trip to Florida. Jorge ate
2
of the oranges,
5
Ann ate 0.18 of the oranges, Mrs. Ramirez ate 22% of
the oranges, and Mr. Ramirez ate the rest. What
percent of the oranges did Mr. Ramirez eat? 20%
Holt CA Course 2
6-3 Finding
Percents Algebraic Expressions
1-1
Evaluating
Lesson Quiz: Part II
4. Rada is 170% as tall as her brother Raj. Raj is
0.82 m tall. To the nearest tenth of a meter,
how tall is Rada? 1.4 m
5. The volume of Lake Superior is 2900 mi3 and
the volume of Lake Erie is 116 mi3. What
percent of the volume of Lake Superior is the
volume of Lake Erie?
4%
Holt CA Course 2
6-4
a Number Algebraic
When the Percent
is Known
1-1Finding
Evaluating
Expressions
Lesson Quiz
1. 10 is 12 1
2 % of what number? 80
2. 326 is 25% of what number? 1304
3. 44% of what number is 11? 25
4. 290% of what number is 145? 50
5. Larry has 9 novels about the American
Revolutionary War. This represents 15% of his
total book collection. How many books does
Larry have in all? 60
Holt CA Course 2
6-5 Applying
Percent of
Increase andExpressions
Decrease
1-1
Evaluating
Algebraic
Lesson Quiz
Find each percent increase or decrease to the
nearest percent.
1. from 12 to 15
25% increase
2. from 1625 to 1400
14% decrease
3. from 37 to 125
238% increase
4. from 1.25 to 0.85
32% decrease
5. A computer game originally sold for $40 but is
now on sale for 30% off. What is the sale price
of the computer game? $28
Holt CA Course 2
6-6
SalesAlgebraic
Tax, and Profit
1-1Commission,
Evaluating
Expressions
Lesson Quiz
1. Every month, Gillian makes $1600 plus an
8.9% commission on sales. If her sales last month
totaled $18,400, what was her total pay? $3237.60
2. The sales tax is 5.75%, and the shirt costs
$20. What is the total cost of the shirt? $21.15
3. Sheridan has a yearly income of $39,650, and
he is advised to invest $4500 every year. What
percent of his income should he invest, to the
nearest tenth of a percent? 11.3%
4. A grocery store earns 5% profit on all canned
goods. If the store sold $1635 of canned goods,
what was the profit? $81.75
Holt CA Course 2
6-7
Simple and
Compound Interest
1-1Applying
Evaluating
Algebraic
Expressions
Lesson Quiz: Part I
1. A bank is offering 2.5% simple interest on a
savings account. If you deposit $5000, how much
interest will you earn in one year? $125
2. Joshua borrowed $1000 from his friend and paid
him back $1050 in six months. What simple annual
interest did Joshua pay his friend? 10%
Holt CA Course 2
6-7
Simple and
Compound Interest
1-1Applying
Evaluating
Algebraic
Expressions
Lesson Quiz: Part II
3. The Hemmings borrowed $3000 for home
improvements. They repaid the loan and $600 in
simple interest four years later. What simple annual
interest rate did they pay? 5%
4. Theresa invested $800 in a savings account that
pays 4% interest compounded quarterly. Find the
value of the investment after 6 years.
$1015.79
Holt CA Course 2