Add & sub within 20 without crossing 10
Add & sub within 100 w/o crossing the 10
Add & sub 2-digit #s without renaming
Add & sub 3-digit #s without renaming
True & false number sentences within 20
Add & subtract multiples of 10 within 100
Add & sub within 200 without renaming
Add & subtract multiples of 10 within 40
Add & sub multiples of 10 within 100 (2)
Add & sub multiples of 100 within 1,000
1.OA.6, 2.OA.2
2.NBT.5
2.NBT.7
2.OA.2
1.NBT.4, 1.NBT.5
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