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7  \n7) 1 7 - 4  \n11) 1 8 - 9  \n15) 7 -2  \n19) 1 9 - 5  \n4) 1 7 + 1  \n8) 1 3 + 3  \n12) 9 + 5  \n16) 9 + 2  \n20) 1 7 + 2  \nAnswers  \n1.  \n2.  \n3.  \n4.  \n5.  \n6.  \n7.  \n8.  \n9.  \n10.  \n11.  \n12.  \n13.  \n14.  \n15.  \n16.  \n17.  \n18.  \n19.  \n20.  \nMath  \n[www.CommonCoreSheets.com](www.CommonCoreSheets.com)  \n7  \n1-10 11-20  \n95  \n45  \n90  \n40  \n85  \n35  \n80  \n30  \n75  \n25  \n70  \n20  \n65  \n15  \n60  \n10  \n55  \n5  \n50  \n0  \nAdding and Subtracting within 20  \nName: Answer Key  \nSolve each problem.  \n1) 1 7 2)- 6  \n1 1  \n5) 1 5 6)- 3  \n1 2  \n9) 8 10)-3  \n5  \n13) 1 3 14)  \n- 2  \n1 1  \n17) 2 0 18)  \n- 7  \n1 3  \n1 0 + 5  \n1 5  \n1 8 + 2  \n2 0  \n6  \n+ 4  \n1 0  \n1 0 + 2  \n1 2  \n8  \n+ 2  \n1 0  \n3) 1 6  \n- 7  \n9  \n7) 1 7 - 4  \n1 3  \n11) 1 8  \n- 9  \n9  \n15) 7  \n-2  \n5  \n19) 1 9 - 5  \n1 4  \n4) 1 7 + 1  \n1 8  \n8) 1 3  \n+ 3  \n1 6  \n12)  \n16)  \n9  \n+ 5  \n1 4  \n9  \n+ 2  \n1 1  \n20) 1 7 + 2  \n1 9  \nAnswers  \n1. 11 2. 15 3. 9 4. 18 5. 12 6. 20 7. 13 8. 16 9. 5 10. 10 11. 9 12. 14 13. 11 14. 12 15. 5 16. 11 17. 13 18. 10 19. 14  \n20. 19  \nMath  \n[www.CommonCoreSheets.com](www.CommonCoreSheets.com)  \n7  \n1-10 11-20  \n95  \n45  \n90  \n40  \n85  \n35  \n80  \n30  \n75  \n25  \n70  \n20  \n65  \n15  \n60  \n10  \n55  \n5  \n50  \n0  \nAdding and Subtracting within 20  \nName:  \n\n| Solve each problem. | Answers\u003Cbr>1.  \u003Cbr>2.  \u003Cbr>3.  \u003Cbr>4.  \u003Cbr>5.  \u003Cbr>6.  \u003Cbr>7.  \u003Cbr>8.  \u003Cbr>9.  \u003Cbr>10.  \u003Cbr>11.  \u003Cbr>12.   |\n| --- | --- |\n| \u003Cbr>15 18 12 14\u003Cbr>9 11 9 10\u003Cbr>20 13 5 16 |  |\n| 1) 1 7 2) 1 0 3) 1 6 4) 1 7\u003Cbr>- 6  + 5  - 7  + 1 \u003Cbr>5) 1 5 6) 1 8 7) 1 7 8) 1 3\u003Cbr>- 3  + 2  - 4  + 3 \u003Cbr>9) 8 10) 6 11) 1 8 12) 9\u003Cbr>-3   + 4  - 9   + 5  |  |\n\nMath  \nModified  \n[www.CommonCoreSheets.com](www.CommonCoreSheets.com)  \n7  \n1-10 11-12  \n\n| 92 | 83 | 75 | 67 | 58 | 50 | 42 | 33 | 25 | 17 |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |\n| 8 | 0 |  |  |  |  |  |  |  |  |","cbCaib5sYsWVBmvP","https://ap.wps.com/l/cbCaib5sYsWVBmvP","pdf",46713,"English","# Solve each problem\n# Answers","[{\"question\":\"What topic does this worksheet practice?\",\"answer\":\"It practices adding and subtracting numbers within 20 using a set of numbered problems.\"},{\"question\":\"How are the problems presented?\",\"answer\":\"Each question is shown with operands and either a plus or minus sign, and students solve for the missing result.\"},{\"question\":\"Where can students find the solutions?\",\"answer\":\"The sheet includes an “Answers” section that lists the final answer for each problem number.\"}]","Adding and Subtracting within 20 - Math Worksheets | PDF"]