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\n17) 4 18)  \n+ 2  \n1 7 + 3  \n1 7 + 1  \n1 4 + 6  \n1 4 + 3  \n1 0 + 6  \n3) 6 + 4  \n7) 5 + 1  \n11) 1 1 + 5  \n15) 1 0 + 3  \n19) 1 6 + 2  \n4) 1 1 + 1  \n8) 1 5 + 1  \n12) 5 + 3  \n16) 9 + 5  \n20) 1 0 + 8  \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)  \n5  \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 Within 20  \nName: Answer Key  \nSolve each problem.  \n1) 1 9 2)+ 1  \n2 0  \n5) 1 3 6)+ 4  \n1 7  \n9) 1 6 10)  \n+ 4  \n2 0  \n13) 8 14)  \n+ 1  \n9  \n17) 4 18)  \n+ 2  \n6  \n1 7 + 3  \n2 0  \n1 7 + 1  \n1 8  \n1 4 + 6  \n2 0  \n1 4 + 3  \n1 7  \n1 0 + 6  \n1 6  \n3)  \n6  \n+ 4  \n1 0  \n7) 5  \n+ 1  \n6  \n11) 1 1 + 5  \n1 6  \n15) 1 0  \n+ 3  \n1 3  \n19) 1 6  \n+ 2  \n1 8  \n4) 1 1 + 1  \n1 2  \n8) 1 5 + 1  \n1 6  \n12) 5  \n+ 3  \n8  \n16) 9 + 5 1 4  \n20) 1 0 + 8  \n1 8  \nAnswers  \n1. 20 2. 20 3. 10 4. 12 5. 17 6. 18 7. 6 8. 16 9. 20 10. 20 11. 16 12. 8 13. 9 14. 17 15. 13 16. 14 17. 6 18. 16 19. 18  \n20. 18  \nMath  \n[www.CommonCoreSheets.com](www.CommonCoreSheets.com)  \n5  \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 Within 20  \nName:  \nSolve each problem.  \n9 16 12 17 13 17 18 16 6  \n8 20 14  \n1) 1 9 2) 1 7 3) 6 + 1 + 3 + 4  \n5) 1 3 6) 1 7 7) 5 + 4 + 1 + 1  \n9) 1 6 10) 1 4 11) 1 1 + 4 + 6 + 5  \n13) 8 14) 1 4 15) 1 0 + 1 + 3 + 3  \nMath  \nModified  \n[www.CommonCoreSheets.com](www.CommonCoreSheets.com)  \n5  \nAnswers  \n20  \n20  \n20  \n10  \n4) 1 1 + 1  \n8) 1 5 + 1  \n12) 5 + 3  \n16) 9 + 5  \n1.  \n2.  \n3.  \n4.  \n5.  \n6.  \n7.  \n8.  \n9.  \n10.  \n11.  \n12.  \n13.  \n14.  \n15.  \n16.  \n1-10 94 88 81 75 69 63 56 50 44 38  \n11-16 31 25 19 13 6 0","cbCaitbtP7QLAUf2","https://ap.wps.com/l/cbCaitbtP7QLAUf2","pdf",47034,"English","# Addition Practice Problems\n## Answer Key","[{\"question\":\"What is the primary objective of this worksheet?\",\"answer\":\"The primary objective is to practice and reinforce basic addition skills for sums within 20.\"},{\"question\":\"Does the document include a way to check work?\",\"answer\":\"Yes, the document provides an answer key for all twenty problems to allow for easy verification of results.\"},{\"question\":\"How many addition problems are included in the worksheet?\",\"answer\":\"There are 20 individual addition problems presented in the exercise.\"}]","Adding Within 20 - Math Practice Worksheet | PDF"]