Students either solve the addition problem, then write the inverse subtraction number sentence OR solve the subtraction problem, then write the inverse addition number sentence.
3 levels are included:
- Level 1: Adding or subtracting a single-digit number from a 2-digit number
- Level 2: Adding or subtracting a 2-digit number from a 2-digit number
- Level 3: Adding or subtracting a 2-digit number from a 3-digit number