**Add & Subtract Crossing the 10 within 100**

### $0.99/each

2, 3, & 4 as addends

2.NBT.5

7 as an addend (3)

2.NBT.5

5 as a subtrahend (3)

2.NBT.5

8 as a subtrahend (3)

2.NBT.5

Subtract neighboring ones digits

2.OA.1, 2.NBT.5

5 as an addend

2.NBT.5

8 as an addend (3)

2.NBT.5

Add 2-digit #s making & crossing the 10

1.NBT.4, 2.NBT.5

Add 2-digit numbers within 100

1.NBT.4, 2.NBT.5

6 as a subtrahend (3)

2.NBT.5

9 as a subtrahend (3)

2.NBT.5

6 as an addend (3)

2.NBT.5

9 as an addend (3)

2.NBT.5

Add crossing the 10 within 100

2.NBT.5

2, 3, & 4 as subtrahends (3)

2.NBT.5

7 as a subtrahend (3)

2.NBT.5