5. Writing to Explain The distance around the Earth at the equator is

Quick Check
Name
1-1
1. What is the number eight million,
three hundred thousand, fiftythree in standard form?
2. What is 30,270,904 in expanded
form?
A 3,000,000 ⫹ 200,000 ⫹ 70,000
⫹ 900 ⫹ 4
A 8,030,530
B 8,300,053
B 30,000,000 ⫹ 200,000 ⫹ 7,000
⫹ 900 ⫹ 4
C 8,350,035
C 30,000,000 ⫹ 20,000 ⫹ 70,000
⫹ 900 ⫹ 4
D 8,300,035
D 30,000,000 ⫹ 200,000 ⫹
70,000 ⫹ 900 ⫹ 4
3. The population of the United
States was estimated to be
299,398,484 in July 2006. What is
this number in word form?
4. What is the value of the underlined
digit in 12,864,125?
A 600
B 6,000
A two billion, ninety-nine million,
thirty-nine hundred thousand,
four hundred eighty-four
C 60,000
D 600,000
B two hundred ninety-nine
million, three hundred thousand ninety, four hundred
eighty-four
C two hundred ninety-nine
million, three hundred ninetyeight thousand, four hundred
eighty-four
D twenty-nine billion, nine
million, three hundred ninetyeight thousand, four hundred
eighty-four
5. Writing to Explain The distance around the Earth
at the equator is approximately 40,076 kilometers.
Write this number in word form and expanded form.
Q 1•1
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Quick Check
Name
1-2
8
1. What is 5___
as a decimal?
100
A 5.008
B 5.08
C 5.8
D 58
2. Anna finished 0.75 of her homework. What is 0.75 as a fraction?
7
A ___
10
75
B ___
10
75
C ____
100
750
D ____
100
4
hours on a project for a science fair.
3. Hunji spent 2__
10
4
__
What is 210 as a decimal?
A 24
B 2.4
C 2.04
D 2.004
4. Writing to Explain Owen is 147.3 cm tall. What is Owen’s
height as a mixed number? What is Owen’s height as an
improper fraction? Explain how you solved the problem.
Q 1•2
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Quick Check
Name
1-3
1. What is 0.009 as a fraction?
94
as a decimal?
2. What is ____
1,000
9
A __
A 0.904
1
B 0.094
9
B ___
10
C 0.0904
9
C ____
100
D 0.0094
9
D _____
1,000
3. A kitten weighed 0.128 kilograms when it was born. What is 0.128
as a fraction?
128
A _____
1,000
128
B ____
100
128
C ____
10
128
D ____
1
4. Writing to Explain Jessie has a box of 1,000 marbles. He
has 75 yellow marbles, 230 red marbles, 331 blue marbles,
and 364 green marbles. What fraction of his marbles are
yellow? What fraction of his marbles are red? Write each
fraction as a decimal. Explain how you found each of the
fractions.
Q 1•3
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Quick Check
Name
1-4
1. How is the number five and two hundred three thousandths
written in standard form?
A 0.5203
B 5.203
C 5.0203
D 5.00203
2. What is the word form of the decimal number 8.007?
A Eight and seven thousandths
B Eight and seven hundred thousandths
C Eight and seven tenths
D Eight and seven hundredths
3. Micah read that the diameter of a certain microbe is 0.354
millimeters. How should he read this number?
A three hundred fifty-four
B three hundred fifty-four thousandths
C three hundred fifty-four hundredths
D three thousand fifty-four hundredths
4. Which number is equivalent to 4.054?
A 0.4054
B 4.540
C 4.0054
D 4.05400
5. Writing to Explain The times for a swimming race were
posted as shown below. In what order did the swimmers
finish the race? Explain your answer.
Swimmer
Time (seconds)
Amanda
46.23
Lee
46.059
Juanita
46.230
Bessie
46.59
Q 1•4
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Quick Check
Name
1-5
2. Four students ran the 100-m
dash. Their times are shown
in the table.
1. Which shows the following
numbers in order from greatest
to least? 8.751, 8.762, 8.784,
8.756
A 8.784, 8.762, 8.756, 8.751
B 8.751, 8.756, 8.762, 8.784
C 8.756, 8.751, 8.784, 8.762
D 8.762, 8.751, 8.784, 8.756
Student
Time
(seconds)
Molly
Talisha
Hadley
Shondra
14.56
14.89
15.02
14.67
Who ran the fastest?
A Molly
B Talisha
C Hadley
D Shondra
3. Which shows the following numbers in order from least to
greatest? 28.247, 28.375, 28.015, 28.211
A 28.211, 28.015, 28.375, 28.247
B 28.247, 28.211, 28.015, 28.375
C 28.375, 28.247, 28.211, 28.015
D 28.015, 28.211, 28.247, 28.375
4. Writing to Explain In a math game, Hakeem has to
choose a number that is greater than 7.923 and less
than 7.929. What must the digit in the hundredths
place be in the number he chooses? Explain.
Q 1•5
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Quick Check
Name
1-6
1. What is the missing number in the grid?
A 0.06
0.14
0.15
0.16
B 0.16
0.36
C 0.26
D 0.46
2. Elizabeth drew a grid of 7 cells in a row. The number 0.26 was in the middle
and the number 0.29 was in the last cell. What number was in the first cell?
0.26
0.29
A 0.25
B 0.24
C 0.23
D 0.22
3. What is the missing number in the grid?
0.14
0.17
0.24
A 0.18
0.34
0.35
0.36
0.37
B 0.27
C 0.36
D 0.47
4. Writing to Explain Determine the pattern and then complete the grid.
Describe the pattern.
0.65
0.66
0.68
0.75
0.87
0.88
0.96
Q 1•6
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