This Fluency Activity is a part of the Lesson 27, Unit 1, Grade 1. Reviewing number bonds allows students to build and maintain fluency with addition and subtraction facts within 10. Match partners of equal ability. Each student rolls 1 die. Students use the numbers on their own die and their partner's die as the parts of a number bond. They each write a number bond, addition sentence, and subtraction sentence on their personal white boards.