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K-5 Grade 2 Unit 7

Gradeband

•K-5 Math 6-8 Math 9-12 Math

Course

Kindergarten Grade 1 •Grade 2 Grade 3 Grade 4 Grade 5

Unit

Unit 1 Unit 2 Unit 3 Unit 4 Unit 5 Unit 6 •Unit 7 Unit 8 Unit 9

Lesson

Lesson 1 Lesson 2 Lesson 3 Lesson 4 Lesson 5 Lesson 6 Lesson 7 Lesson 8 Lesson 9 Lesson 10 Lesson 11 Lesson 12 Lesson 13 Lesson 14 Lesson 15 Lesson 16 Lesson 17 Lesson 18 Lesson 19

K-5
6-8
9-12

Kindergarten
Grade 1
Grade 2
Grade 3
Grade 4
Grade 5

Unit 1
Unit 2
Unit 3
Unit 4
Unit 5
Unit 6
Unit 7
Unit 8
Unit 9

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Section A Practice

Student Handouts

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Unit 7, Section A

Add and Subtract within 1,000, without Composition or Decomposition

Grade 2

Practice

Problem 1
2.NBT.A.1 2.NBT.A.3
Pre-unit
Student Task Statement
Select all representations of the number 318.

Three hundred eighteen

Three hundred eighty-one

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Problem 2

2.NBT.A.1 2.NBT.A.3

Pre-unit

Student Task Statement

Write a number for each representation.

Five hundred twenty-seven

______________
______________
______________
______________

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Problem 3

Pre-unit

Student Task Statement

Find the value of each sum or difference. Show your thinking, using drawings, numbers, or words.

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Problem 4

1.NBT.C.5 1.NBT.C.6

Pre-unit

Student Task Statement

Find the value of each difference.

to access Practice Problem Solutions.

Problem 5

ForLesson 1: Compare, Count On, and Count Back

Student Task Statement

Find the value of each difference. Show your thinking, using drawings, numbers, or words.

to access Practice Problem Solutions.

Problem 6

ForLesson 2: Add and Subtract with Tens and Hundreds

Student Task Statement

Here are Kiran’s blocks.

He gives 2 tens to Priya.

What is the value of Kiran’s blocks now? Show your thinking, using objects, drawings, numbers, or words.
Then Priya gives Kiran 4 hundreds.
What is the value of Kiran’s blocks now? Show your thinking, using objects, drawings, numbers, or words.

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Problem 7

ForLesson 3: Count On or Count Back to Subtract

Student Task Statement

Find the value of each difference. Show your thinking, using objects, drawings, numbers, or words.

to access Practice Problem Solutions.

Problem 8

ForLesson 4: Add and Subtract 3-Digit Numbers in Different Ways

Student Task Statement

Find the value of . Show your thinking, using drawings, numbers, or words.
Find the value of . Show your thinking, using drawings, numbers, or words.

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Problem 9

ForLesson 5: Center Day 1

Student Task Statement

Find the value of each expression. Explain your reasoning.

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Problem 10

Exploration

Student Task Statement

Han used a number line to find a difference. Here is his work.

<p>Number line.</p>

Write an expression to show the difference Han found. Explain your reasoning.
Write an addition equation and a subtraction equation to match Han’s work.

to access Practice Problem Solutions.

Problem 11

Exploration

Student Task Statement

Tyler finds the value of . He uses what he knows about differences between 2 two-digit numbers.

“First, I find . Then I find . That gives me the answer.”

Use Tyler’s reasoning. Find the value of .
Do you think Tyler’s strategy will always work? Why or why not?

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