Embedded Files
Standard
Standard
Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
Student Language:
- "I can find 10 more or 10 less in my head."
Resources
Resources
Videos
Videos
- Khan Academy
- Scroll to 1.NBT.5, click on skill, find videos on left side of each skill
Extra Practice
Extra Practice
- North Carolina Tasks
- Illustrative Math Tasks
- Howard County Tasks
- Click on 1st grade at bottom, then 1.NBT.5
- Common Core Sheets
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