Do your students need help or practice with mentally adding and subtracting 10 and 100? This file contains math notebook or journal task cards. Students can choose (or the teacher can decide) which task cards the students complete in their journal. I have included directions on how use these in my classroom.
This file also contains a poster or help page for students to see exactly what their journal page or notebook page should look like for completing this journal prompt question.
This activity would be good for small group and RTI. It also fits CCS 2.NBT.B.8