Illustrative MathematicsVaries

This instructional task can be thought of as a sequel to K.OA.3, which asks students to consider all the decompositions of a number into two addends. Because first grade students may have trouble reading this task even thought they are intellectual capable of working on this problem, it will help if the teacher reads the prompt to the students and then has them work together in pairs or small groups. Some students will interpret 'most' to mean 'strictly greater than' and some will allow for the possibility that 'most' and 'second most' are actually equal. Either interpretation of 'most' is fine as long as the students are consistent with this interpretation throughout.