This product provides LOADS of practice of calculating SUMS LESS THAN 20 in a fun, enjoyable, challenging format.
Because the first (start) number is determined by the roll of a number cube, it is possible for students to get 6 different results for the same card!
I choose to print these 12 cards on copy paper and then slip two of them back-to-back in a sheet protector. Result: only 6 sheets to keep up with plus they store nicely in a 3-ring binder.
I know that you and your students will enjoy and benefit from using these.