Addition & subtractionGrade 2
Vertical Addition w/ Carry practice
Column addition of 2-digit numbers where the ones column carries into the tens, such as 22 + 58 = 80. You write the small carry digit too.
Example problems
2
2
5
8
＋
0
1
8
2
1
2
9
＋
0
1
5
5
6
6
＋
2
1
6
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.