# Common Core Aligned Resources for 1.OA.B.4

#### Understand subtraction as an unknown-addend problem. For example, subtract 10 - 8 by finding the number that makes 10 when added to 8.

Showing

**1**-**30**of**36**resourcesShowing **1** - **30** of **36** resources

- Judy A., Teacher
- Scottsdale, AZ