Addition & subtractionGrade 1
1-Digit Addition practice
Add two one-digit numbers whose total stays below 10, such as 2 + 7. Each answer is a single digit.
Example problems
2
＋
7
＝
9
5
＋
2
＝
7
5
＋
4
＝
9
How a practice round works
A round has 10 problems from this skill. Type the digits into the dotted boxes; if a digit is wrong, you simply try again. Get 5 of your last 6 problems right on the first try to master the skill, then keep practicing to earn up to three stars.
Learn these first
This is a starting skill: nothing to learn before it.