I created these cards to help increase my students subtraction fluency. It's a quick and easy way to give the students a little practice as they walk out of the classroom door for the day. This gives them the chance to try and use the mental math strategies that we have been practicing in the classroom. The cards can also be used as flash cards!
The pack includes 210 subtraction problems within 20 and 6 blank cards for you to fill in as you see fit for your students.
***If you like these, you'll love my Addition Fact Exit Cards as well. Check them out using the link below.
Addition to 20 Exit Cards