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Unit 7 - Lesson 6 - Grade 2: Illustrative Mathematics
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Lesson: Use a Ten to Add Within 1,000
1
Cool Down : Find the Sum
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Grade 2 Unit 7
Lesson 6: Use a Ten to Add Within 1,000
CC BY 2021 Illustrative Mathematics®
Grade 2 Unit 7
Lesson 6: Use a Ten to Add Within 1,000
CC BY 2021 Illustrative Mathematics®
Number Talk: Numbers that Make 10 (Warm Up)
Find the value of each expression mentally.
1
Question 1
1.
28 + 2
1
Question 2
2.
28 + 12
1
Question 3
3.
67 + 3
1
Add Two-digit and Three-digit Numbers
Find the value of each sum.
1
Question 5
5.
Set 1
245 + 15 =_______
247 + 23 =_______
249 + 31 =_______
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1
Question 6
6.
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1
1
Card Sort: Perfect Ten
Match each three-digit number to a two-digit number. When you add your numbers together they should make a ten with no extra ones.
Question 9
9.
Pick 1 pair of numbers and find the value of their sum. Show your thinking.
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Question 10
10.
Find the value of 157 + 33.
Show your thinking. Use base-ten blocks if it helps.
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Question 4
4.
67 + 23
Set 2
134 + 26 =_______
133 + 37 =_______
138 + 42 =_______
Question 7
7.
Set 3
351 + 19 =_______
356 + 24 =_______
355 + 35 =_______
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Question 8
8.
What patterns did you notice?