An error occurred while receiving your review. Please refresh the page and try again.

An error occurred while saving. Please refresh the page and try again.

An error occurred while saving. Please refresh the page and try again.

An error occurred while saving. Please refresh the page and try again.

An error occurred while saving. Please refresh the page and try again.

Unit 2, Lesson 27

Solve addition and subtraction problems decomposing and composing teen numbers as 1 ten and some ones.

EngageNY 60 min(s)

In this lesson, students solve "result-unknown" problems. They move through a progression from problems with teens decomposed or composed using 1 ten and some ones (such as 13 - 3 or 16 - 4) to problems where they find the hidden ten (such as 8 + 6 or 12 - 5).