Subtract within 5

The first instance of the Subtraction within 5 exercise is under the Early Math Math Mission. This exercise practices subtraction of one digit numbers less than or equal to five.

Types of problems
There is one type of problem that shows up in this exercise:
 * 1) Subtract the numbers: This problem has two numbers, both less than or equal to five, which are to be subtracted. The student is to insert their answer in the appropriate blank.Sub5.png

Strategies
This problem is very easy to attain both speed and accuracy badges.