Lesson 3.5 Answers - Fort Thomas Independent Schools

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Name
Name
3-4B Lesson Master
Questions on SPUR Objectives
3-4B
page 2
USES
SKILLS Objective C: Round any number up, down, or to the
Objective J: Use fractions to answer questions in
real situations.
nearest value of a fraction or decimal place.
530
817
45.5
54
1,600
430
−1
0
1.64
−1.436
−850
−800
202
200
202.1
202.11
1. Truncate 534.68 in the tens place.
2. Truncate 817.68 in the units place.
3. Round 45.1632 up to the next half.
4. Round 53.78 up to the next half.
5. Round 1,648 down to the preceding hundred.
6. Round 438 down to the preceding ten.
7. Round −1.354 up to the next integer.
8. Round −0.416 up to the next integer.
9. Round 1.6428 to the nearest hundredth.
10. Round −1.4357 to the nearest thousandth.
11. Round −842 down to the preceding ten.
12. Round −732 down to the preceding hundred.
13. Estimate 111.346 + 90.7592 to the nearest integer.
14. Estimate 111.346 + 90.7592 to the nearest ten.
15. Estimate 111.346 + 90.7592 to the nearest tenth.
16. Estimate 111.346 + 90.7592 to the nearest hundredth.
17. Marty has 56 sports trading cards. He places the cards in protective
plastic pages. Each page holds 9 cards. How many pages does Marty
need to protect all 56 cards?
7 pages
18. Rosi serves spaghetti dinner for 22 people. She thinks she needs
1
__
cup of spaghetti sauce for each serving and thinks half of the
2
22 people will have 2 servings. How many cups of sauce will she
need to make?
16 _12 cups
19. Tim earns $12 mowing lawns for 1 hour and 20 minutes. How much
money does he earn in 1 hour?
$9
5 _1 inches
20. Lori buys 24 inches of ribbon for a craft project. She uses two
9 __14 - inch pieces of the ribbon. How many inches of the ribbon is left?
USES
2
Objective K: Deal with estimates in real situations.
21. The battery on Kara’s video camera lasts for about 5 __14 hours. She
videotapes her 50-minute math class each day. About how many
times can Kara videotape her math class before she needs to
recharge the battery?
about 6 times
22. Ari serves 34 glasses of lemonade at his party. He garnishes each
glass with a lemon wedge. Each lemon wedge is about __16 of a
lemon. About how many lemons does Ari cut apart to garnish
34 glasses?
about 6 lemons
23. Nairi figures that it will cost $6.38 per student to buy new art
supplies. About how much will it cost to buy new art supplies
for 28 students?
about $180
24. Robert hires two “Happy-to-Clean” workers at $8.25 an hour per
worker to clean his house. He estimates it will take the two of them
working together about 5 hours to clean his home. About how much
will the cleaning cost?
25. The U.S. population reached 100,000,000 in 1915, reached
200,000,000 in 1967, and then reached 300,000,000 in 2006.
To what place-value position was each of those population
figures rounded?
Transition Mathematics
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167
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Name
Questions on SPUR Objectives
See pages 199–201 for objectives.
SKILLS Objective A
5
7
1. 2 __12 , 2 __
, 2 __
12 20
5
7
__
_1
2 __
20 ; 2 12 ; 2 2
UCSMP_SMP08_NL_TM1_TR1_C03_157-1168 168
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0.6
7
b. __
10
3-5B Lesson Master
2. −__53 , −__49 , −1 __28
3. 8.75, 8, __23 , 8 __58
− __35 ; −1 _28 ; − _49
8 _58 ; 8 _23 ;8.75
0.7
5
c. __8
3
1. 3.2, 3 __57 , 3 __
20
3
35
__
3 __
20 ; 3.2 ; 7
4
6
4. __7 , __59 , __
11
0.625
d. __34
6
__
0.75
11
SKILLS Objective D
63
__
21
__
6. 0.84
25
0.072
7. _____
2.88
1
__
c. __78
40
e. __13
0.06
7.1125
9
9. Find the decimal equal to 7 ___
.
80
g. __38
SKILLS
Copyright © Wright Group/McGraw-Hill
Objective H
;
7
5. 9 __25 , 9 __35 , 7 __52
9 _25
;
5
− _57 ; − _59 ; − __
11
4.6
;
7
6. 3 __45 , −3.9, 3 __
10
7
_4
−3.9 ; 3 __
10 ; 3 5
7 _52 ; 9 _35
11. Write 3.5030303… in raised bar notation.
12. Write 101 __16 as a decimal using the raised bar.
1
d. __4
3
f. __5
2
h. __4
0.8
0.25
0.6
0.5
Objective D: Convert among decimals, fractions,
In 8–13, find a simple fraction equal to the given number.
89
__
10
9. 3.74
8. 8.9
22
__
25
10. 0.88
11. 0.320
3
___
0.048
0.048
100
12. _____
13. _____
Objective J
1.6
13. A marathon is a race that is 26.22 miles long. Erin is running
a marathon and passes a sign that says “12 __12 miles remaining.”
How far has Erin run so far?
0.64
187
___
50
8
__
25
3
__
40
In 14 and 15, convert the fraction to a decimal.
14. A recipe calls for 1 __14 pounds of carrots. If you buy a bag of carrots
weighing 2.13 pounds, how many pounds of carrots will you have
left over after making the recipe?
4
b. __5
and percents.
7
3.503
101.16
10. Give the digit in the 14th decimal place in 1.3785.
13.72 miles
25
14. __
64
0.88 pound
In 16 and 17, find the decimal equal to the given number.
Transition Mathematics
UCSMP_SMP08_NL_TM1_TR1_C03_157-1169 169
9
5
3. −__57 , −__59 , −__
11
5
_3
4 __
12 ; 4 7
0.5
0.875
0.3
0.375
a. __12
2
8. Convert __
to a decimal.
33
PROPERTIES
_4
_5
;
5
2. 4.6, 4 __37 , 4 __
12
7. Write the decimal for each fraction from memory.
In 5–7, find a simple fraction equal to the given number.
10
Questions on SPUR Objectives
In 1–6, order from least to greatest.
4. Write the decimal for each fraction from memory.
USES
Transition Mathematics
168
SKILLS Objective A: Order and compare decimals and fractions.
In 1–3, order from least to greatest.
5. 6.3
hundred millions
Name
3-5A Lesson Master
2
a. __3
about $83
169
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23
16. __
20
170
0.390625
1.15
5
15. __
18
84
17. __
5
0.27
16.8
Transition Mathematics
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Transition Mathematics
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