Practice addition with mixed exercise types!
- Question 1: blank plus 4 equals 9.
- Question 2: 1 plus 1 equals blank.
- Question 3: blank plus 1 equals 4.
- Question 4: 3 plus 4 equals blank.
- Question 5: 4 plus 3 equals blank.
- Question 6: blank plus 4 equals 8.
