$0.59/sprint
Add & sub within 20 without crossing 10
True & false number sentences within 20
Add & subtract multiples of 10 within 40
Add & sub within 100 w/o crossing the 10
Add & subtract multiples of 10 within 100
Add & sub multiples of 10 within 100 (2)
Add & sub 2-digit #s without renaming
Add & sub within 200 without renaming
Add & sub multiples of 100 within 1,000
Add & sub 3-digit #s without renaming