G2 U1 L7 TE
Applied MP
MPs * Embedded MP
Conceptual Lesson Grade 2 · Unit 1 · Lesson 7
1
2
3
4
5
6
*
7
* *
MC: 2.NBT.3 Student Journal Pages
27-30
Today, I will read and represent numbers in expanded form.
Vocabulary
Teacher Resources
Whole number: any number including 0 (e.g., 0, 1, 2, 3, …); the number 113 is a whole number.
Considerations:
Base ten blocks (used to represent/draw whole numbers)
When writing a number in expanded form, the number is decomposed. This term will be referenced when using strategies to add and subtract.
hundreds
tens
ones
Emphasize that another way to write the whole number 113 is 100 + 10 + 3.
Application of MPs: MP2: How do you know your answer is reasonable?
100
+
10
+
3
The expanded form of 113.
MP7: Did you notice any patterns when expanding numbers? MP8: What strategies did you use to help solve the problems?
Standard form: the way we usually write numbers Decompose: taking apart a number into hundreds, tens, and ones.
Copyright © Swun Math
8
Grade 2 Unit 1 Lesson 7 C TE
Answer Key: I/M
SGP
FCU
HW
1. 400 + 70 + 2 = 472
1. 200 + 40 + 7 = 247
1. 600 + 80 + 3 = 683
1. 538
2. 300 + 20 + 5 = 325
2. 500 + 50 + 1 = 551
2. 300 + 40 + 9 = 349
2. 590
3. 8 hundreds, 0 tens, 3 ones
4. 2 hundreds, 2 tens, 0 ones. Drawings may vary.
Copyright © Swun Math
Grade 2 Unit 1 Lesson 7 C TE
/ *MP1: Make sense of the problem and persevere in solving it! *MP8: Find a strategy to help solve the problem. Directions: Read and solve.
1.
Write the number 472 and model the hundreds, tens, and ones using base ten blocks.
Count the 100s.
= 400 or 4 hundreds
Count the 10s. = 70 or 7 tens
Count the 1s. =
2 or 2 ones
Explain that expanded form is a way to write numbers by adding the value of each of its digits (or by adding the value of the hundreds, tens, and ones). The number 472 in expanded form is:
400 + 70 + 2 = 472
Copyright © Swun Math
Grade 2 Unit 1 Lesson 7 C TE
/ Directions: Read and solve.
2.
Write the number 325 and model the hundreds, tens, and ones using base ten blocks.
Count the 100s.
= 300 or 3 hundreds
Count the 10s. = 20 or 2 tens
Count the 1s. =
5 or 5 ones
Write the number in expanded form, by adding the value of each of its digits (or by adding the value of the hundreds, tens, and ones). The number 325 in expanded form is:
300 + 20 + 5 = 325
Copyright © Swun Math
Grade 2 Unit 1 Lesson 7 C TE
/ Directions: Read and solve.
1.
Post the number 247.
Count the 100s.
Count the 10s.
Count the 1s.
Explain to a partner that when writing the number in expanded form it is represented in hundreds, tens, and ones parts.
Write the number 247 in expanded form.
+
+
=
2.
Post the number 551.
Count the 100s.
Count the 10s.
Count the 1s.
Explain when writing the number in expanded form, it is represented in hundreds, tens, and ones parts.
Write the number 551 in expanded form.
+
Copyright © Swun Math
+
=
Grade 2 Unit 1 Lesson 7 C TE
Directions: Read and solve.
1.
Post the number 683.
Students will model each place value with pictures and write the number in expanded form.
Post the number 349.
Students will model each place value with pictures and write the number in expanded form.
2.
Recap today’s lesson with one or more of the following questions: MP2: How did you know your answer was reasonable? MP7: Did you notice any patterns when expanding numbers? MP8: What strategies did you use to solve the problems?
Copyright © Swun Math
Grade 2 Unit 1 Lesson 7 C TE
Name: ____________________________ Directions: Review.
Date: ______________________________
1. Write the number with 8 ones, 5 hundreds, and 3 tens.
2. Write the number with 5 hundreds, 9 tens, and zero ones.
Copyright © Swun Math
Grade 2 Unit 1 Lesson 7 C TE
3. How many hundreds, tens, and ones in 803?
4. How many hundreds, tens, and ones in 220? Draw a picture or use the place value chart to prove your answer.
Copyright © Swun Math
Grade 2 Unit 1 Lesson 7 C TE
MPs * Embedded MP
Conceptual Lesson Grade 2 · Unit 1 · Lesson 7
1
2
3
4
5
6
*
7
* *
MC: 2.NBT.3 Student Journal Pages
27-30
Today, I will read and represent numbers in expanded form.
Vocabulary
Teacher Resources
Whole number: any number including 0 (e.g., 0, 1, 2, 3, …); the number 113 is a whole number.
Considerations:
Base ten blocks (used to represent/draw whole numbers)
When writing a number in expanded form, the number is decomposed. This term will be referenced when using strategies to add and subtract.
hundreds
tens
ones
Emphasize that another way to write the whole number 113 is 100 + 10 + 3.
Application of MPs: MP2: How do you know your answer is reasonable?
100
+
10
+
3
The expanded form of 113.
MP7: Did you notice any patterns when expanding numbers? MP8: What strategies did you use to help solve the problems?
Standard form: the way we usually write numbers Decompose: taking apart a number into hundreds, tens, and ones.
Copyright © Swun Math
8
Grade 2 Unit 1 Lesson 7 C TE
Answer Key: I/M
SGP
FCU
HW
1. 400 + 70 + 2 = 472
1. 200 + 40 + 7 = 247
1. 600 + 80 + 3 = 683
1. 538
2. 300 + 20 + 5 = 325
2. 500 + 50 + 1 = 551
2. 300 + 40 + 9 = 349
2. 590
3. 8 hundreds, 0 tens, 3 ones
4. 2 hundreds, 2 tens, 0 ones. Drawings may vary.
Copyright © Swun Math
Grade 2 Unit 1 Lesson 7 C TE
/ *MP1: Make sense of the problem and persevere in solving it! *MP8: Find a strategy to help solve the problem. Directions: Read and solve.
1.
Write the number 472 and model the hundreds, tens, and ones using base ten blocks.
Count the 100s.
= 400 or 4 hundreds
Count the 10s. = 70 or 7 tens
Count the 1s. =
2 or 2 ones
Explain that expanded form is a way to write numbers by adding the value of each of its digits (or by adding the value of the hundreds, tens, and ones). The number 472 in expanded form is:
400 + 70 + 2 = 472
Copyright © Swun Math
Grade 2 Unit 1 Lesson 7 C TE
/ Directions: Read and solve.
2.
Write the number 325 and model the hundreds, tens, and ones using base ten blocks.
Count the 100s.
= 300 or 3 hundreds
Count the 10s. = 20 or 2 tens
Count the 1s. =
5 or 5 ones
Write the number in expanded form, by adding the value of each of its digits (or by adding the value of the hundreds, tens, and ones). The number 325 in expanded form is:
300 + 20 + 5 = 325
Copyright © Swun Math
Grade 2 Unit 1 Lesson 7 C TE
/ Directions: Read and solve.
1.
Post the number 247.
Count the 100s.
Count the 10s.
Count the 1s.
Explain to a partner that when writing the number in expanded form it is represented in hundreds, tens, and ones parts.
Write the number 247 in expanded form.
+
+
=
2.
Post the number 551.
Count the 100s.
Count the 10s.
Count the 1s.
Explain when writing the number in expanded form, it is represented in hundreds, tens, and ones parts.
Write the number 551 in expanded form.
+
Copyright © Swun Math
+
=
Grade 2 Unit 1 Lesson 7 C TE
Directions: Read and solve.
1.
Post the number 683.
Students will model each place value with pictures and write the number in expanded form.
Post the number 349.
Students will model each place value with pictures and write the number in expanded form.
2.
Recap today’s lesson with one or more of the following questions: MP2: How did you know your answer was reasonable? MP7: Did you notice any patterns when expanding numbers? MP8: What strategies did you use to solve the problems?
Copyright © Swun Math
Grade 2 Unit 1 Lesson 7 C TE
Name: ____________________________ Directions: Review.
Date: ______________________________
1. Write the number with 8 ones, 5 hundreds, and 3 tens.
2. Write the number with 5 hundreds, 9 tens, and zero ones.
Copyright © Swun Math
Grade 2 Unit 1 Lesson 7 C TE
3. How many hundreds, tens, and ones in 803?
4. How many hundreds, tens, and ones in 220? Draw a picture or use the place value chart to prove your answer.
Copyright © Swun Math
Grade 2 Unit 1 Lesson 7 C TE
