12 Days of Gifts
3.NBT.3 – Fluently add and subtract within 1000 using strategies and algorithms based on place value.
4.NBT.4
Act 1
Act 2
- days 1 – 4
- days 5 – 8
- days 9-12
Act 3

3.NBT.3 – Fluently add and subtract within 1000 using strategies and algorithms based on place value.
4.NBT.4
