Less Challenging

• Add 2-digit #s within 40 without renaming

• Add within 100 without crossing the 10

More Challenging

• Add 2-digit #s without renaming (2)

• Subtract 2-digit #s without renaming

• Add & sub 2-digit #s without renaming

About This Sprint

Before taking this Sprint, students should understand the unit values of 2-digit numbers, e.g.

72 is 7 tens 2 ones