Addition to 20 Worksheets | Kindergarten & 1st Grade Math Practice | No Prep + Answer KeyLooking for fun and engaging addition practice? This Addition to 20 worksheet set is perfect for Kindergarten and 1st Grade students who are learning to add within 20. This printable packet includes 10 black-and-white worksheets that are perfect for morning work, math centers, homework, or independent practice. Each worksheet features 12 addition problems and comes with a matching answer key for easy ch