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Showtime! Math lessons will help you perform
your best and set the stage for success.
• Bridge content gaps
• Engage in a consistent procedure for writing about math
• Develop number sense
Student Book
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Unit 1 Lesson 1
Place Value
Name _____________________________ Class _________________ Date ______________
Evan put base-10 pieces on a place value mat. What number did Evan model?
Thousands
Hundreds
thousands
Place
Tens
hundreds
Ones
tens
ones
Value
thousands=
hundreds =
tens
=
ones
=
Each thousand has a value of 1,000.
Each hundred has a value of 100.
Each ten has a value of 10.
Each one has a value of 1.
Evan modeled the number
.
Give the place value and value of each underlined digit.
1
472
Thousands Hundreds Tens Ones
© 2012 Cambium. All rights reserved.
2
2,851
Thousands Hundreds Tens Ones
3
6,230
4
95
5
413
6
8,046
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Unit 1 Lesson 2
Odd and Even Numbers
Name _____________________________ Class _________________ Date ______________
Use the following steps to tell whether 273 is odd or even.
1. What is the ones digit?
Look at the ones digit of the number.
2. Is the ones digit 0, 2, 4, 6, or 8?
If the ones digit is 0, 2, 4, 6, or 8,
then the number is even.
Is the number 273 even?
3. Is the ones digit 1, 3, 5, 7, or 9?
If the ones digit is 1, 3, 5, 7, or 9,
then the number is odd.
Is the number 273 odd?
Tell whether each number is odd or even.
The ones digit is
The number 50 is
3
2
50
2
.
The ones digit is
.
138
The ones digit is
The number 138 is
481
.
The number 481 is
4
.
705
The ones digit is
.
.
The number 705 is
5
663
6
354
7
17
8
942
.
.
© 2012 Cambium. All rights reserved.
1
Grade 3 • Showtime! Math
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Unit 1 Lesson 3
Expanded Notation
Name _____________________________ Class _________________ Date ______________
Use the following steps to write the number 1,256 in expanded notation.
1. Identify the place value of each digit in the number. Find the value
of each digit.
Thousands
Hundreds
thousand
Tens
hundreds
Ones
tens
ones
2. Write the number as the sum of the values of its digits. If a digit is 0, it is
not in the sum.
1,256 =
+
+
+
Write each number in expanded notation.
1
Thousands
© 2012 Cambium. All rights reserved.
7,843 =
2
+
Thousands
2,015 =
3
Hundreds
103
Tens
+
Hundreds
+
Ones
+
Tens
Ones
+
4
5,922
Grade 3 • Showtime! Math
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Unit 1 Lesson 4
Open-Ended Response
Name _____________________________ Class _________________ Date ______________
Jake wrote the names and lengths of rivers on a world map.
A.The Parana River is 3,032 miles long. The Volga River is 2,193 miles long.
The Amur River is 2,761 miles long. How many of these rivers are an odd
number of miles long?
1. Organize your solution.
What do I know?
The Parana River is
miles long.
The Volga River is
miles long.
The Amur River is
miles long.
What am I trying to find?
Steps
Solve
Explain
I dentify
the even
numbers.
3,032 is even because its
.
ones digit is
I identified even numbers by
checking the ones digits for
0, 2, 4, 6, or 8.
I dentify
the odd
numbers.
2,193 is odd because its
.
ones digit is
I identified odd numbers by
checking the ones digits for
1, 3, 5, 7, or 9.
2,761 is odd because its
ones digit is
.
Find how odd numbers:
many odd
numbers
there are.
numbers are odd.
Answer the question.
4
I listed and counted the odd
numbers to find how many
are odd.
© 2012 Cambium. All rights reserved.
What steps should I use to solve the problem?
Grade 3 • Showtime! Math
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Unit 1 Lesson 4
Open-Ended Response (cont.)
How can I show that my results are reasonable?
I can make sure that the numbers are not even. The ones digit of 2,193
is
. The ones digit of 2,761 is
. The ones digits are not 0, 2, 4, 6,
or 8, so the numbers are not even.
2. Show or explain your work.
A.The Parana River is 3,032 miles long. The Volga River is 2,193 miles long.
The Amur River is 2,761 miles long. How many of these rivers are an odd
number of miles long?
To solve the problem, I first
To check my results, I
© 2012 Cambium. All rights reserved.
3. Review your response.
Did I use a complete sentence to answer the original question? Put a
check mark beside the sentence.
Did I explain step-by-step how I solved the problem? Look back at the
steps in your table. In your response, write the step letter beside the
sentence explaining the step.
Did I explain why my answer is reasonable? In your response, write the
letter R beside the sentence that explains why your answer is reasonable.
Did I use math vocabulary words? Underline each math word you used.
Grade 3 • Showtime! Math
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Unit 1 Lesson 5
Open-Ended Response Practice
Name _____________________________ Class _________________ Date ______________
Use the three-part process to answer the open-ended question.
Jake wrote the names and lengths of rivers on a world map.
B.The Amazon River is 4,087 miles long. The Lena River is 2,734 miles long.
The Milk River is 625 miles long. How many of these rivers are an even
number of miles long?
1. Organize your solution.
What do I know?
What am I trying to find?
What steps should I use to solve the problem? Write a letter for as many
steps as you need. Use the bottom of the last page of the lesson if you need
more space.
Steps
Solve
Explain
Answer the question.
6
© 2012 Cambium. All rights reserved.
Grade 3 • Showtime! Math
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Unit 1 Lesson 5
Open-Ended Response Practice (cont.)
How can I show that my results are reasonable?
2. Show or explain your work.
B.The Amazon River is 4,087 miles long. The Lena River is 2,734 miles long.
The Milk River is 625 miles long. How many of these rivers are an even
number of miles long?
To solve the problem, I first
© 2012 Cambium. All rights reserved.
To check my results, I
Grade 3 • Showtime! Math
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Unit 1 Lesson 5
Open-Ended Response Practice (cont.)
3. Review your response.
Did I use a complete sentence to answer the original question? Put a
check mark beside the sentence.
Did I explain step-by-step how I solved the problem? Look back at the
steps in your table. In your response, write the step letter beside the
sentence explaining the step.
Did I explain why my answer is reasonable? In your response, write the
letter R beside the sentence that explains why your answer is reasonable.
© 2012 Cambium. All rights reserved.
Did I use math vocabulary words? Underline each math word you used.
8
Grade 3 • Showtime! Math
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