$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