Missing Addends – Sums of 13 – Snacking Squirrel This little squirrel won’t pay you any mind, so don’t worry about him. He’ll keep snacking while you fill in these missing addends!CCSS 1.OA.6 Sponsored AdDownload the PDFBECOME A MEMBER NOW!Grade Levels: First GradeSubjects: Addition // Missing Addends - Sums of 11-15 // Math // First Grade Addition