➡️ Type the missing digit:

Start on the right. Add the ones column, remembering to carry over. Look at the tens column. The tens column must add up to 6. The missing number is 4.

➡️ Type the missing digit:

Start on the right. Add the ones column. Look at the tens column. The tens column must add up to 7. The missing number is 5.

➡️ Type the missing digit:

Start on the right. Look at the ones column. Add the ones. The missing number is 5.