Add a two-digit and a one-digit number - horizantally
Add a two-digit and a one-digit number - vertically
Add two two-digit numbers - with regrouping
Add two two-digit numbers - without regrouping
Add two three-digit numbers - with regrouping
Add two three-digit numbers - without regrouping
Adding Three Two Digit Numbers
Balance addition equations - one digit
Balance addition equations - up to two digits
Completing 1 Digit Addition Sentences
Adding Hundreds
Estimating the Sum of Two Numbers
Fill in the missing number - 3 digits
Ways to make a number using addition