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\n17) 1 1 18)  \n+ 4  \n1 0 + 4  \n1 0 + 9  \n1 0 + 5  \n1 8 + 1  \n1 0 + 8  \n3) 8 + 7  \n7) 1 3 + 5  \n11) 1 6 + 1  \n15) 1 7 + 2  \n19) 1 0 + 7  \n4) 8 + 1  \n8) 9 + 7  \n12) 1 1 + 3  \n16) 1 7 + 3  \n20) 1 2 + 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)  \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 3 2)+ 7  \n2 0  \n5) 1 6 6)+ 4  \n2 0  \n9) 1 3 10)  \n+ 4  \n1 7  \n13) 1 4 14)  \n+ 1  \n1 5  \n17) 1 1 18)  \n+ 4  \n1 5  \n1 0 + 4  \n1 4  \n1 0 + 9  \n1 9  \n1 0 + 5  \n1 5  \n1 8 + 1  \n1 9  \n1 0 + 8  \n1 8  \n3)  \n8  \n+ 7  \n1 5  \n7) 1 3 + 5  \n1 8  \n11) 1 6  \n+ 1  \n1 7  \n15) 1 7  \n+ 2  \n1 9  \n19) 1 0  \n+ 7  \n1 7  \n4)  \n8)  \n8  \n+ 1  \n9  \n9  \n+ 7  \n1 6  \n12) 1 1 + 3  \n1 4  \n16) 1 7  \n+ 3  \n2 0  \n20) 1 2  \n+ 8  \n2 0  \nAnswers  \n1. 20 2. 14 3. 15 4. 9 5. 20 6. 19 7. 18 8. 16 9. 17 10. 15 11. 17 12. 14 13. 15 14. 19 15. 19 16. 20 17. 15 18. 18 19. 17  \n20. 20  \nMath  \nSeed: 1691987864-8  \n[www.CommonCoreSheets.com](www.CommonCoreSheets.com)  \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  \n20 16 15 14  \n15 19 19 9 1.  \n15 19 20 17  \n20 17 18 14 2.  \n3.  \n1) 1 3 2) 1 0 3) 8 4) 8  \n+ 7 + 4 + 7 + 1 4.  \n5.  \n6.  \n7.  \n5) 1 6 6) 1 0 7) 1 3 8) 9  \n8.  \n+ 4 + 9 + 5 + 7  \n9.  \n10.  \n11.  \n9) 1 3 10) 1 0 11) 1 6 12) 1 1 12.  \n+ 4 + 5 + 1 + 3  \n13.  \n14.  \n15.  \n13) 1 4 14) 1 8 15) 1 7 16) 1 7 16.  \n+ 1 + 1 + 2 + 3  \nMath Modified 1-10 94 88 81 75 69 63 56 50 44 38  \n[www.CommonCoreSheets.com](www.CommonCoreSheets.com) 11-16 31 25 19 13 6 0","cbCaiqebicklKI4r","https://ap.wps.com/l/cbCaiqebicklKI4r","pdf",47116,"English","# Addition Exercises\n## Answer Key","[{\"question\":\"What is the primary objective of this worksheet?\",\"answer\":\"The primary objective is to help students practice and improve their ability to perform addition operations where the sum is 20 or less.\"},{\"question\":\"Does the document include a method to check the work?\",\"answer\":\"Yes, the document provides an answer key section where all twenty addition problems have been solved, allowing students to verify their own answers.\"},{\"question\":\"What range of numbers does this worksheet cover?\",\"answer\":\"The worksheet focuses exclusively on addition problems with sums within the range of 20, incorporating various combinations of single and two-digit numbers.\"}]","Adding Within 20 - Math Practice Worksheet | PDF"]