Addition and Subtraction FactsAuthor: Description: Keywords: , , , , , , online teaching
Content: Definitions: 0. 9%2b3 1. 4%2b5 2. 3%2b4 3. 12-4 4. 8%2b5 5. 6%2b5 6. 9-6 7. 7%2b8 8. 8%2b9 9. 1%2b3 10. 4%2b7 11. 15 - 9 12. 12 -7 13. 7%2b6 14. 5%2b5 15. 9%2b9
Answers: 0. 7 1. 9 2. 6 3. 13 4. 11 5. 12 6. 13 7. 1 8. 10 9. 17 10. 18 11. 8 12. 2 13. 15 14. 14 15. 3
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