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Unit 7 - Lesson 2 - Grade 2: Illustrative Mathematics
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Lesson: Add and Subtract with Tens and Hundreds
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Cool Down: How Many Blocks?
Grade 2 Unit 7
Lesson 2: Add and Subtract with Tens and Hundreds
CC BY 2021 Illustrative Mathematics®
Grade 2 Unit 7
Lesson 2: Add and Subtract with Tens and Hundreds
CC BY 2021 Illustrative Mathematics®
Number Talk: Add Multiples of 10 (Warm Up)
Find the value of each expression mentally.
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Question 1
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Question 2
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Question 3
3.
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Show It with Base-ten Blocks
Use your base-ten blocks to show each number. Then, roll a number cube to see how many tens or hundreds to add or subtract.
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Question 5
5.
visibility
View drawing
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Question 9
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How Many with Base-ten Blocks and Equations
Question 12
12.
Mai has 2 hundreds, 2 tens, and 3 ones. Lin has 4 hundreds.
Represent their values with base-ten blocks or diagrams.
What is the value of their blocks altogether? Show your thinking.
visibility
View drawing
Question 13
13.
Andre has 4 hundreds, 2 tens, and 8 ones.
Represent his value with base-ten blocks or diagrams.
Andre gives 2 hundreds to Clare.
What is the value of his blocks now? Show your thinking.
visibility
View drawing
Question 14
14.
Diego has 6 tens. Tyler has 8 hundreds, 3 tens, and 6 ones.
What is the value of their blocks together? Show your thinking.
visibility
View drawing
Question 15
15.
Elena has 5 hundreds, 7 tens, and 2 ones. She gives 2 tens to Kiran.
What is the value of her blocks now? Show your thinking.
visibility
View drawing
Question 16
16.
Priya has 6 hundreds, 5 tens, and 8 ones. Han gives her 3 hundreds.
What is the value of her blocks now? Show your thinking.
visibility
View drawing
Question 17
17.
Jada has 4 hundreds, 8 tens, and 2 ones. She gives 3 hundreds to Noah.
What is the value of her blocks now? Show your thinking.
visibility
View drawing
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Question 18
18.
What is the value of their blocks altogether?
visibility
View drawing
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Question 19
19.
Write an equation to show your thinking.
Question 4
4.
Show 297.
Add _______ hundreds.
Complete the equation:
297 +_______ =_______
Question 6
6.
Show 432.
Add _______ tens.
432 + _______ = _______
visibility
View drawing
Question 7
7.
Show 982.
Subtract _______ tens.
982 - _______ = _______
visibility
View drawing
Question 8
8.
Show 351.
Add _______ hundreds.
visibility
View drawing
Show 351.
Write an equation:
Question 10
10.
Show 805.
Subtract _______ hundreds.
visibility
View drawing
Question 11
11.
Show 805.
Write an equation: