Download although you may use your calculator for this test

**ALTHOUGH YOU MAY USE YOUR CALCULATOR FOR THIS TEST; YOU MUST
STILL SHOW ALL WORK. CALCULATORS TAKE THE PLACE OF SCRATCH NOT
STEPS!!!!
CHAPTER 7 REVIEW:YOU WILL HAVE QUESTIONS JUST
LIKE THIS ON THE TEST
Multiple Choice
Identify the choice that best completes the statement or answers the question.
____
1.
Jessica ran 5 miles per day for x days in a row. Write an expression to show
the total number of miles that Jessica ran.
a. 5 ÷ x
c. 5 + x
b. 5x
d. 5– x
____
2.
Write the phrase “the quotient of a and 12” as a numerical or algebraic
expression.
a. a • 12
c. a ÷ 12
b. 2 ÷ z
d. 12 - z
____
3.
Write the decimal 5. 7 in words.
a. seven tenths
b. five and seven tenths
____
4.
Order the decimals 61.53, 652.12, 65.135, 65.213 from greatest to least.
a. 61.53, 65.213, 652.12, 65.135
c. 65.213, 65.135, 61.53, 652.12
b. 652.12, 65.213, 65.135, 61.53
d. 652.12, 65.135, 61.53, 65.213
____
5.
Find the product of 735.4 x 1000
a. 7,354
c. 735,400
b. 73,054
d. 7,354,000
____
6.
A group of friends are going to see a movie. The table shows how much
different groups will pay in all. How much will a group of 10 pay?
# of people
3
5
10
12
Cost ($)
15
25
?
60
a. 20 dollars
b. 30 dollars
c. five and seven hundredths
d. seven hundredths
c. 50 dollars
d. 35 dollars
____
7.
Find the missing value in the proportion . 1/9 = n/63
a. n = 0
c. n = 7
b. n = 8
d. n = 567
____
8.
Brett was absent 2% of the school year. Write 2% as a decimal.
a. 0.02
c. 0.2
b. 12.5
d. 0
____ 9.
Jocelyn wants to buy a computer game for $37. If the sales tax is
8%, what is the total cost of the computer game?
a. $39.96
c. $35.96
b. $2.96
d. $39.00
Numeric Response
10.
Evaluate the expression for 3x-y , for x = 4 and y= 6 . ____________
11. Given that the first term in a sequence is 4/6 , the third term is 16/24 , the fourth
term is 32/48 , and the fifth term is 64/96 , make a table to find the value of
the second term.
12.
Sammy is entering a bicycle race for charity. His mother pledges $0.75 for
every 0.5 miles he bikes. If Sammy bikes 17.5 miles, how much money will his
mother donate? Write a proportion and show the 4 steps.
13.
About 39 parts out of 50, of the Earth's atmosphere is made up of nitrogen.
What percentage of the Earth's atmosphere is not made of nitrogen?
14. A new bike costs $95.00. Derek waits until it is 25% off to buy it. Find the
amount that Derek pays for the new bike before tax.
Short Answer
15.
Maple Point's school store sells balloons for $11.50 per dozen. The sales tax
is 6%.
a.
How much is the sales tax on a dozen balloons? Show your work.
b.
What will be the total cost of a dozen balloons? Show your work.
16.
17.
18.
19.
20.
A total of 325 tickets were sold for the school dance, and 36% of these
were sold to boys. How many tickets were sold to boys?
Find 25% of 48.
Find 33% of 18.
Find 6% of 50.
Find 40% of 120.
CHAPTER 7
Answer Section
MULTIPLE CHOICE
1. ANS:
B
To find the total number of letters Isabel wrote, multiply the number of letters by the number of
months.
11x
Feedback
A
B
C
D
Use the operation that means to put together groups of equal parts.
Correct!
Use the operation that means to put together groups of equal parts.
Use the correct operation.
PTS: 1
DIF: Average
REF: Page 58
OBJ: 2-2.1 Application
NAT: 8.5.2.g STA: 2.8.6.C | M6.D.2.2.1
TOP: 2-2 Translate Between Words and Math
KEY: expression | algebraic
expression
2. ANS:
C
Use “” when you see these keywords:
divided by
the quotient
Feedback
A
B
C
D
Look for keywords in the phrase.
Check the order of the terms.
Correct!
Look for keywords in the phrase.
PTS: 1
DIF: Average
REF: Page 59
OBJ: 2-2.2 Translating
Words into Math
NAT: 8.5.2.b STA: 2.8.6.C | M6.D.2.2.1
TOP: 2-2 Translate Between Words and Math
KEY: expression | algebraic
expression
3. ANS:
B
First, write the number before the decimal point. Then, write the decimal point as “and.” Finally,
write the number after the decimal point and use the correct place value.
Feedback
A
B
C
D
First, write the number before the decimal point. Then, write the decimal point as “and.”
Finally, write the number after the decimal point and use the correct place value.
Correct!
Check the place value of the decimal.
First, write the number before the decimal point. Then, write the decimal point as “and.”
Finally, write the number after the decimal point and use the correct place value.
PTS: 1
DIF: Average
REF: Page 108
OBJ: 3-1.1 Reading and Writing Decimals
NAT: 8.1.1.a
STA: 2.1.6.A TOP: 3-1 Representing Comparing and Ordering Decimals
KEY: decimal
4. ANS:
B
Feedback
A
B
C
D
Look at the decimal point to help you order the numbers.
Correct!
Order the numbers from greatest to least, not least to greatest.
Look at the decimal point to help you order the numbers.
PTS: 1
DIF: Advanced
NAT: 8.1.1.i
STA: 2.1.6.C | M6.A.1.2.1
TOP: 3-1 Representing Comparing and Ordering Decimals
KEY: decimal | order
5. ANS:
C
There are 3 zeros in 1,000.
680.600
To multiply, move the decimal point 3 places right.
Write 2 place holder zeros.
Feedback
A
B
C
D
The number of zeros in the power of 10 tells how many places to move the decimal point.
First, find the number of zeros in the power of 10. Then, move the decimal point that
number of places.
Correct!
Move the decimal point the correct number of places.
PTS: 1
DIF: Average
REF: Page 124
OBJ: 3-4.1 Multiplying by
Powers of Ten
NAT: 8.1.1.f STA: 2.2.6.B | M6.A.3.2.1
TOP: 3-4 Scientific Notation
KEY: powers of ten
6. ANS:
B
The spaceship travels between 400 miles and 1,200 miles in 4 minutes.
Multiply the distance the spaceship travels in 2 minutes by 2.
The spaceship travels 800 miles in 4 minutes.
Feedback
A
B
C
D
Multiply the distance the spaceship travels in 2 minutes by 2.
Correct!
Multiply the distance the spaceship travels in 2 minutes by 2.
Use the table to find a pattern.
PTS: 1
DIF: Average
REF: Page 357
OBJ: 7-2.2 Application
STA: 2.1.6.D TOP: 7-2 Using Tables to Explore Equivalent Ratios and Rates
7. ANS:
C
Find the cross products.
The cross products are equal.
n is multiplied by 9.
n=7
Divide both sides by 9 to undo the multiplication.
Feedback
A
B
C
D
Cross multiply.
Find the cross products.
Correct!
First, find the cross products and set them equal. Then, divide to undo the multiplication
and solve for the variable.
PTS: 1
DIF: Average
REF: Page 363
OBJ: 7-3.2 Using Cross Products to Complete Proportions
STA: 2.2.6.B | M6.A.3.2.1
TOP: 7-3 Proportions
KEY: proportion | cross products
8. ANS:
A
8%
=
Write the percent as a fraction with a denominator of 100.
= 0.08
Write the fraction as a decimal.
Feedback
A
B
C
D
Correct!
Divide the percent by 100.
Divide the percent by 100 by moving the decimal point two places to the left.
Divide the percent by 100 by moving the decimal point two places to the left.
PTS: 1
DIF: Average
REF: Page 382
OBJ: 7-7.5 Application
NAT: 8.1.1.e STA: 2.1.6.A TOP: 7-7 Percents
KEY: percent | decimal
9. ANS:
A
Step 1 Round $34.55 to $35.
Step 2 6% of $35 = 0.06 • $35 = $2.10
Step 3 Add this amount to $35 to estimate the total cost of the doll.
$35 + $2.10 = $37.10
Feedback
A
B
C
D
Correct!
First, round the cost of the doll, and multiply it by the sales tax rate. Then, add the result to
the rounded cost.
Instead of subtracting, add the sales tax to the cost of the doll.
This is the sales tax only. Now, find the total cost of the doll with the sales tax.
PTS: 1
DIF: Average
REF: Page 395
Tax
NAT: 8.1.4.d STA: 2.2.6.B | M6.A.3.2.1
TOP:
KEY: sales tax
OBJ: 7-10.3 Finding Sales
7-10 Using Percents
NUMERIC RESPONSE
10. ANS:
25
PTS: 1
DIF: Average
TOP: 2-1 Variables and Expressions
11. ANS:
NAT: 8.5.3.c
PTS: 1
DIF: Advanced
TOP: 7-3 Proportions
12. ANS:
45
STA: 2.8.6.B | M6.D.1.1.1
PTS: 1
DIF: Advanced
M6.A.3.2.1
TOP: 7-4 Similar Figures
13. ANS:
261
NAT: 8.3.2.f
STA: 2.1.6.D | 2.2.6.B |
PTS: 1
DIF: Average
M6.A.3.2.1
TOP: 7-6 Scale Drawings and Maps
14. ANS:
84
NAT: 8.3.2.f
STA: 2.2.6.B | 2.3.6.F |
PTS: 1
DIF: Average
NAT: 8.1.1.e
TOP: 7-8 Percents Decimals and Fractions
15. ANS:
$53.25
PTS: 1
DIF: Average
TOP: 7-9 Percent Problems
16. ANS:
$404.40
STA: 2.2.6.B | M6.A.3.2.1
STA: 2.2.6.B | M6.A.3.2.1
KEY: multi-step
NAT: 8.1.4.d
KEY: multi-step
STA: 2.2.6.B | M6.A.3.2.1
PTS: 1
DIF: Advanced
NAT: 8.1.4.d
TOP: 7-10 Using Percents
KEY: multi-step
STA: 2.2.6.B | M6.A.3.2.1
MATCHING
17. ANS:
E PTS:
TOP: 7-10 Using Percents
18. ANS:
A PTS:
1 DIF:
Basic REF:
KEY: discount
1 DIF:
Basic REF:
Page 394
Page 381
STA: 2.1.6.A
19. ANS:
STA: 2.1.6.D
TOP: 7-7 Percents KEY: percent | model
D PTS:
1 DIF:
Basic REF:
TOP: 7-1 Ratios and Rates
KEY: ratio
Page 352
SHORT ANSWER
20. ANS:
45 miles
Scoring Rubric:
4
The solution is correct, and all of the work is shown as above.
or
A different logical method is used to find the correct solution.
3
The solution is correct, but not all of the work is shown.
2
The solution is incorrect, but the work shows understanding of the concept.
1
The solution is incorrect, and the work shows no understanding of the concept.
PTS: 1
DIF: Average
NAT: 8.1.2.b STA: M6.A.3.1.1
KEY: decimal | estimation
21. ANS:
1.77 pounds
OBJ: 3-2.PA01 Estimating Decimals
TOP: 3-2 Estimating Decimals
Scoring Rubric:
4
The solution is correct, and all of the work is shown as above.
or
A different logical method is used to find the correct solution.
3
The solution is correct, but not all of the work is shown.
2
The solution is incorrect, but the work shows understanding of the concept.
1
The solution is incorrect, and the work shows no understanding of the concept.
PTS: 1
DIF: Average
OBJ: 3-3.PA02 Adding and Subtracting Decimals
NAT: 8.1.3.g STA: 2.2.6.B | M6.A.3.2.1
TOP: 3-3 Adding and Subtracting Decimals
KEY: decimal | addition | subtraction
22. ANS:
a.
$1.11
sales tax = $18.50 • 0.06 = $1.11
b.
$19.61
total = price + sales tax
total = $18.50 + $1.11 = $19.61
Scoring Rubric:
4
3
2
1
The solution is correct, and all of the work is shown as above.
or
A different logical method is used to find the correct solution.
Both solutions are correct, but not all of the work is shown.
The solution for part a is correct, but the solution for part b is incorrect.
or
The solution for part a is incorrect, but the solution for part b is correct.
Both solutions are incorrect, and the work shows no understanding of the concept.
PTS: 1
DIF: Average
OBJ: 7-10.PA09 Using Percents
NAT: 8.1.4.d STA: 2.2.6.B | M6.A.3.2.1
TOP: 7-10 Using Percents
KEY: percent | problem solving
23. ANS:
The ratios 11 to 12, 22 to 24, 33 to 36, and 44 to 48 are equivalent.
Original Ratio
22
11
24
12
33
36
44
48
PTS: 1
DIF: Basic
REF: Page 356
OBJ: 7-2.1 Making a Table to Find Equivalent Ratios
TOP: 7-2 Using Tables to Explore Equivalent Ratios and Rates
24. ANS:
78%
=
=
Write the percent as a fraction with a denominator of 100.
Write the fraction in simplest form.
PTS: 1
DIF: Average
NAT: 8.1.1.e STA: 2.1.6.A TOP:
25. ANS:
232 pixels
Use the proportion .
. Cross multiply and solve for x.
REF: Page 382
OBJ: 7-7.3 Application
7-7 Percents
KEY: percent | fraction
PTS: 1
DIF: Average
REF: Page 391
OBJ: 7-9.2 Application
NAT: 8.1.4.d STA: 2.2.6.B | M6.A.3.2.1
TOP: 7-9 Percent Problems
KEY: percent | problem solving
26. ANS:
$546.00
Formula for simple interest
Substitute P = $350.00, r = 0.08, and t = 7 years.
Multiply.
To find the total amount in Umeki’s account after 7 years, add the interest to the principal.
$350.00 + $196.00 = $546.00
Umeki will have $546.00 in the account after 7 years.
PTS: 1
DIF: Average
REF: Page 400
Interest
NAT: 8.1.4.d STA: 2.3.6.B | M6.A.3.2.1
TOP:
KEY: simple interest | interest
OBJ: 7-Ext.1 Finding Simple
7-Ext Simple Interest