Posted on October 5, 2017 by admin Adding 10, Practice 1 10 + 23 51 + 10 10 + 49 15 + 10 10 + 66 74 + 10 10 + 12 68 + 10 10 + 78 59 + 10 Post navigationPrevious post: Adding 15, 25, …Next post: Question #1