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®
Find the value of each expression mentally.
28 + 2
28 + 12
67 + 3
67 + 23
Find the value of each sum.
Set 1
245 + 15 =
247 + 23 =
249 + 31 =
Set 2
134 + 26 =
133 + 37 =
138 + 42 =
Set 3
351 + 19 =
356 + 24 =
355 + 35 =
What patterns did you notice?
Pick 1 pair of numbers and find the value of their sum. Show your thinking.
Find the value of 157 + 33.
Show your thinking. Use base-ten blocks if it helps.