Addition & subtractionGrade 2
Vertical Subtraction w/ Borrow practice
Column subtraction where the ones column has to borrow from the tens, such as 55 − 9 = 46.
Example problems
1
6
8
−
8
5
5
9
−
6
4
9
3
5
−
8
8
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.