Addition & subtractionGrade 1
Subtraction within 10 practice
Subtract a one-digit number from a number up to 10 without borrowing, such as 7 − 5.
Example problems
4
−
1
＝
3
5
−
3
＝
2
7
−
5
＝
2
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.