Adding and Subtracting Mixed Numbers Subtracting Mixed Numbers Answer Key 7. 1 and 1/15 8. 23/60 9. 2 and 1/12 10. 6 and 3/10 11. 16 and 7/30 12. 3 and 8/15 Adding Mixed Numbers Answer Key 9. 20 and 23/60 10. 7 and 5/24 11. 10 and 22/35 12. 11 and 1/24 13. 10 and 2/15 14. 10 and 29/33 Mrs. Hall, 2020