With 30 simple addition within 20 problems per worksheet and 2 worksheets in this pack, there is plenty of practice for the kids here. We've added a extra challenge at the end too.
Addition Within 20 Practice Worksheets Set 1
This fun poster (which comes as pictured and with 2 fill-in-the-blanks versions) can be put on display or laminated to be kept as a reference. Understanding and learning the "teen facts" makes everything that comes later easier!