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\nFind the missing number.  \n1) 15  \n\n| + |  |\n| --- | --- |\n\n85  \n+ 11  \n 98  \n9) 45  \n+ 33  \n13) 82 + 12  \n17) 72  \n\n| + |  |\n| --- | --- |\n\n85  \n2) 5 + 44  \n6) 64  \n\n| + |  |\n| --- | --- |\n\n89  \n10) 72  \n\n| + |  |\n| --- | --- |\n\n87  \n+ 30  \n99  \n18) 30  \n\n| + |  |\n| --- | --- |\n\n78  \n+ 13  \n97  \n7) 40  \n\n| + |  |\n| --- | --- |\n\n56  \n11) 73  \n\n| + |  |\n| --- | --- |\n\n94  \n15) 11  \n+ 51  \n19) 24  \n\n| + |  |\n| --- | --- |\n\n87  \n+ 10  \n66  \n+ 21  \n68  \n12) 19 + 50  \n16) 30  \n\n| + |  |\n| --- | --- |\n\n95  \n20) 80  \n+ 14  \nAdd two 2-digit numbers in columns, missing  addend (no regrouping)   \nGrade 1 Addition Worksheet  \nFind the missing number.  \n1) 15  \n\n| + | 70 |\n| --- | --- |\n\n85  \n5) 87  \n+ 11  \n98  \n9) 45  \n+ 33  \n13) 82 + 12  \n17) 72  \n\n| + | 13 |\n| --- | --- |\n\n85  \n2) 5 + 44  \n6) 64  \n\n| + | 25 |\n| --- | --- |\n\n89  \n10) 72  \n\n| + | 15 |\n| --- | --- |\n\n87  \n14) 69  \n+ 30  \n99  \n18) 30  \n\n| + | 48 |\n| --- | --- |\n\n78  \n3) 84  \n+ 13  \n97  \n7) 40  \n\n| + | 16 |\n| --- | --- |\n\n56  \n11) 73  \n\n| + | 21 |\n| --- | --- |\n\n94  \n15) 11  \n+ 51  \n19) 24  \n\n| + | 63 |\n| --- | --- |\n\n87  \n4) 56  \n+ 10  \n66  \n8) 47  \n+ 21  \n68  \n12) 19 + 50  \n16) 30  \n\n| + | 65 |\n| --- | --- |\n\n95  \n20) 80  \n+ 14","cbCaidaoFE6Hu2Fv","https://ap.wps.com/l/cbCaidaoFE6Hu2Fv","pdf",13296,"English","# Addition Exercises\n## Problems 1-20","[{\"question\":\"What level of mathematics is this worksheet intended for?\",\"answer\":\"This worksheet is designed for first-grade students who are practicing addition.\"},{\"question\":\"What specific skill does this worksheet target?\",\"answer\":\"It targets the ability to find a missing addend in an addition problem involving two-digit numbers without regrouping.\"},{\"question\":\"How are the addition problems formatted in this document?\",\"answer\":\"The problems are presented in columns, which helps students practice standard vertical addition methods.\"}]","Grade 1 Addition Worksheet - 2-Digit Numbers with Missing Addends | PDF"]