Teachers, save “Subtract Like Units” to assign it to your class.

Use the Flipcards to expand the number so you can subtract like units. For example, for 42 - 30 you would expand 42 into 40 and 2 Complete the expression you are thinking by subtracting the like units. For the above example, you would think 40 - 30 = 10 Type your difference and check your work.