Decompose 11-19: Tens and Ones #1

Practice decomposing numbers and writing equations with this kindergarten and first-grade math worksheet! In this inviting one-page addition worksheet, young learners will follow prompts to circle a group of ten frogs and then count the number of frogs that remain. Students will then fill in the numbers to write the equations that represent the sum of the two groups. 

The first in a series of six, this worksheet utilizes pictures to help math learners develop number sense, recognize patterns, and practice decomposing numbers from 11–19. Next up, check out Decompose 11-19: Tens and Ones #2 for additional practice!