Unit 7 - Lesson 2 - Grade 2: Illustrative Mathematics
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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®
Lesson: Add and Subtract with Tens and Hundreds
Find the value of each expression mentally.
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.
Show 297.
Add _______ hundreds.
Complete the equation:
297 +_______ =_______
Show 432.
Add _______ tens.
432 + _______ = _______
Show 982.
Subtract _______ tens.
982 - _______ = _______
Show 351.
Add _______ hundreds.
Show 351.
Write an equation:
Show 351.
Write an equation:
Show 805.
Subtract _______ hundreds.
Show 805.
Write an equation:
Show 805.
Write an equation:
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.
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.
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.
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.
Diego has 6 tens. Tyler has 8 hundreds, 3 tens, and 6 ones.
What is the value of their blocks together? Show your thinking.
Diego has 6 tens. Tyler has 8 hundreds, 3 tens, and 6 ones.
What is the value of their blocks together? Show your thinking.
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.
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.
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.
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.
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.
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.
Cool Down: How Many Blocks?
What is the value of their blocks altogether?
What is the value of their blocks altogether?
Write an equation to show your thinking.
Write an equation to show your thinking.