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\n17) 1 2 18)  \n+ 7  \n1 8 + 1  \n1 9 + 1  \n1 5 + 1  \n1 0 + 2  \n5  \n+ 3  \n3) 1 7 + 1  \n7) 1 0 + 8  \n11) 8 + 1  \n15) 6 + 3  \n19) 6 + 5  \n4) 8 + 2  \n8) 1 1 + 1  \n12) 1 2 + 8  \n16) 1 7 + 3  \n20) 1 2 + 1  \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)  \n2  \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 1 2)+ 4  \n1 5  \n5) 1 3 6)+ 5  \n1 8  \n9) 1 1 10)  \n+ 2  \n1 3  \n13) 1 1 14)  \n+ 5  \n1 6  \n17) 1 2 18)  \n+ 7  \n1 9  \n1 8 + 1  \n1 9  \n1 9 + 1  \n2 0  \n1 5 + 1  \n1 6  \n1 0 + 2  \n1 2  \n5  \n+ 3  \n8  \n3) 1 7 + 1  \n1 8  \n7) 1 0  \n+ 8  \n1 8  \n11) 8  \n+ 1  \n9  \n15) 6  \n+ 3  \n9  \n19) 6 + 5  \n1 1  \n4)  \n8  \n+ 2  \n1 0  \n8) 1 1 + 1  \n1 2  \n12) 1 2  \n+ 8  \n2 0  \n16) 1 7  \n+ 3  \n2 0  \n20) 1 2  \n+ 1  \n1 3  \nAnswers  \n1. 15 2. 19 3. 18 4. 10 5. 18 6. 20 7. 18 8. 12 9. 13 10. 16 11. 9 12. 20 13. 16 14. 12 15. 9 16. 20 17. 19 18. 8 19. 11  \n20. 13  \nMath  \n[www.CommonCoreSheets.com](www.CommonCoreSheets.com)  \n2  \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. Answers  \n18 20 16 12  \n12 20 10 16 1.  \n9 19 18 15  \n18 9 13 20 2.  \n3.  \n1) 1 1 2) 1 8 3) 1 7 4) 8  \n+ 4 + 1 + 1 + 2 4.  \n5.  \n6.  \n7.  \n5) 1 3 6) 1 9 7) 1 0 8) 1 1  \n8.  \n+ 5 + 1 + 8 + 1  \n9.  \n10.  \n11.  \n9) 1 1 10) 1 5 11) 8 12) 1 2 12.  \n+ 2 + 1 + 1 + 8  \n13.  \n14.  \n15.  \n13) 1 1 14) 1 0 15) 6 16) 1 7 16.  \n+ 5 + 2 + 3 + 3  \nwww. CoMommi[eSheets.com](eSheets.com 2 111--1106)[ 2](eSheets.com 2 111--1106)[ 111--1106](eSheets.com 2 111--1106) 9431 8825 8119 75 69 6313 6 0 56 50 44 38  \nMath","cbCail4mhZC4k9N1","https://ap.wps.com/l/cbCail4mhZC4k9N1","pdf",47088,"English","# Addition Practice Exercises\n## Answer Key","[{\"question\":\"What is the primary objective of this worksheet?\",\"answer\":\"The worksheet is designed to help students practice and improve their ability to perform addition operations with sums up to 20.\"},{\"question\":\"Are the answers included in the document?\",\"answer\":\"Yes, the document contains an answer key section where all 20 addition problems are solved for reference.\"},{\"question\":\"What range of numbers does this addition practice cover?\",\"answer\":\"The practice exercises focus on addition operations that result in sums within the range of 20.\"}]","Adding Within 20 - Math Practice Worksheet | PDF"]