1 Balance addition equations - up to 2 digits
2 Add two numbers up to three digits
3 Balance addition equations up to 3 digits
4 Add three or more numbers up to 4 digits
5 Add two numbers with 5 or more digits
6 Add three or more numbers with 5 or more digits
7 Fill in the missing number - 3 digits
9 Fill in the missing digits - I
10 Fill in the missing digit -II
11 Addition Puzzle