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These structured practice problems help young learners reinforce their understanding of place value and basic addition properties in a clear, consistent format. The worksheet serves as an effective learning assessment tool for building foundational arithmetic fluency and confidence in primary school children. Teachers and parents can utilize these exercises to monitor student progress in basic math operations through repetitive, targeted skill-building tasks that encourage logical mathematical 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Worksheet  \nFind the missing number.  \n+ 4  \n54  \n+ 3  \n6  \n+ 3  \n55  \n13) 70 + 6  \n17) 60 + 1  \n2) 71  \n\n| + |  |\n| --- | --- |\n\n78  \n6) 54  \n+ 0  \n+ 0  \n58  \n14) 25  \n\n| + |  |\n| --- | --- |\n\n26  \n18) 40 + 3  \n3) 30  \n\n| + |  |\n| --- | --- |\n\n36  \n+ 1  \n75  \n+ 2  \n36  \n15) 30  \n\n| + |  |\n| --- | --- |\n\n38  \n+ 4  \n57  \n4) 73 + 4  \n8) 70  \n\n| + |  |\n| --- | --- |\n\n78  \n12) 32 + 6  \n+ 2  \n85  \n20) 51  \n+ 2  \nAdd 2-digit / 1-digit numbers in columns,  \n missing addend (no regrouping)   \nGrade 1 Addition Worksheet  \nFind the missing number.  \n1) 50  \n+ 4  \n54  \n5) 3  \n+ 3  \n6  \n9) 52  \n+ 3  \n55  \n13) 70 + 6  \n17) 60 + 1  \n2) 71  \n\n| + | 7 |\n| --- | --- |\n\n78  \n6) 54  \n+ 0  \n10) 58  \n+ 0  \n58  \n14) 25  \n\n| + | 1 |\n| --- | --- |\n\n26  \n18) 40 + 3  \n3) 30  \n\n| + | 6 |\n| --- | --- |\n\n36  \n7) 74 + 1  \n75  \n11) 34  \n+ 2  \n36  \n15) 30  \n\n| + | 8 |\n| --- | --- |\n\n38  \n19) 53  \n+ 4  \n57  \n4) 73 + 4  \n8) 70  \n\n| + | 8 |\n| --- | --- |\n\n78  \n12) 32 + 6  \n16) 83  \n+ 2  \n85  \n20) 51  \n+ 2","cbCailbwmvEv0pLZ","https://ap.wps.com/l/cbCailbwmvEv0pLZ","pdf",13309,"English","# Addition Exercises\n## Problems 1-20","[{\"question\":\"What is the objective of this worksheet?\",\"answer\":\"The objective is to help Grade 1 students practice adding 2-digit and 1-digit numbers by finding the missing addends without regrouping.\"},{\"question\":\"What level of addition does this document cover?\",\"answer\":\"It covers basic addition of 2-digit and 1-digit numbers specifically designed for first-grade students, focusing on non-regrouping operations.\"},{\"question\":\"How are the problems presented?\",\"answer\":\"The problems are presented as column addition exercises where students must identify a missing addend to complete the equation.\"}]","Grade 1 Addition Worksheet - 2-Digit and 1-Digit Numbers - Missing Addends | PDF"]