Need a resource to strengthen your students' understanding of decomposing numbers in flexible ways? This packet includes 3 different ways to think about composing and decomposing numbers; part part whole mats, number bonds, and equations. Each set includes 12 different puzzles, including 2 with pictures instead of numbers. As a bonus, there is more than 1 correct answer for each one, fostering the use of math talk to explain and validate answers. This resource will help many common core objectives for Operations and Algebra in kindergarten and first grades. These pages can be used as warm-ups, seatwork, or math centers.