Unit 7 - Lesson 6 - Grade 2: Illustrative Mathematics

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10 Questions
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Grade 2 Unit 7
Lesson 6: Use a Ten to Add Within 1,000
CC BY 2021 Illustrative MathematicsĀ®
Grade 2 Unit 7
Lesson 6: Use a Ten to Add Within 1,000
CC BY 2021 Illustrative MathematicsĀ®
Lesson: Use a Ten to Add Within 1,000

Number Talk: Numbers that Make 10 (Warm Up)

Find the value of each expression mentally.
1.

28 + 2

2.

28 + 12

3.

67 + 3

4.

67 + 23

Add Two-digit and Three-digit Numbers

Find the value of each sum.
5.
Set 1
245 + 15 =_______
247 + 23 =_______
249 + 31 =_______
6.
Set 2
134 + 26 =_______
133 + 37 =_______
138 + 42 =_______
7.
Set 3
351 + 19 =_______
356 + 24 =_______
355 + 35 =_______
8.

What patterns did you notice?

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.
9.

Pick 1 pair of numbers and find the value of their sum. Show your thinking.

Cool Down : Find the Sum
10.

Find the value of 157 + 33.

Show your thinking. Use base-ten blocks if it helps.