|Subtract within 20|
|Exercise Name:||Subtract within 20|
|Math Missions:||Early math Math Mission, 3rd grade (U.S.) Math Mission, Arithmetic essentials Math Mission, Mathematics I Math Mission|
|Types of Problems:||1|
The Subtract within 20 exercise appears under the Early math Math Mission, 3rd grade (U.S.) Math Mission, Arithmetic essentials Math Mission and Mathematics I Math Mission. This exercise practices basic subtraction facts using numbers up to twenty.
Types of problems
There is one type of problem that shows up in this exercise:
- Subtract the numbers: A subtraction problem is given and the user is asked to provide the answer.
Basic knowledge of subtraction is required for this exercise.
- This problem is easy to get both accuracy badges and speed badges since the problem involved has fairly small numbers and there is question in each problem.
- Subtraction can be used by businesses to see how much money they make minus the money they spent for profit.
- Subtraction is a major fundamental for higher math levels like algebra, calculus, and more.