$0.54/sprint
2, 3, & 4 as addends
5 as an addend
6 as an addend (3)
7 as an addend (3)
8 as an addend (3)
9 as an addend (3)
Add within 100 by making the next 10
Add 2-digit #s making & crossing the 10
Add crossing the 10 within 100
Add 1 more or less than a multiple of 10
Add 2-digit numbers within 100
2, 3, & 4 as subtrahends (3)
5 as a subtrahend (3)
6 as a subtrahend (3)
7 as a subtrahend (3)
8 as a subtrahend (3)
9 as a subtrahend (3)
Subtract within 100 taking from the 10
Subtract neighboring ones digits
Subtract crossing the 10 within 100
Add & subtract crossing the 10 w/in 100
Subtract 1 more or 1 less than a mult of 10