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60 =   3) 40 + 10 =   4) 10 + 60 =   5) 60 + 80 =   6) 40 + 30 =   7) 10 + 40 =   8) 50 + 70 =   9) 40 + 30 =   10) 50 + 20 =   11) 10 + 30 =   12) 20 + 60 =   13) 30 + 80 =   14) 10 + 20 =   15) 30 + 80 =   16) 50 + 40 =   17) 80 + 80 =   18) 70 + 20 =    \n19) 60 + 10 =   20) 80 + 10 =    \nAdding whole tens (2 digits)   \nGrade 1 Addition Worksheet  \nFind the sum.  \n1) 40 + 70 = 110  2) 30 + 60 = 90   \n3) 40 + 10 = 50  4) 10 + 60 = 70   \n5) 60 + 80 = 140  6) 40 + 30 = 70   \n7) 10 + 40 = 50  8) 50 + 70 = 120   \n9) 40 + 30 = 70  10) 50 + 20 = 70   \n11) 10 + 30 = 40  12) 20 + 60 = 80   \n13) 30 + 80 = 110  14) 10 + 20 = 30   \n15) 30 + 80 = 110  16) 50 + 40 = 90   \n17) 80 + 80 = 160  18) 70 + 20 = 90   \n19) 60 + 10 = 70  20) 80 + 10 = 90","cbCaipjIVsFOpEue","https://ap.wps.com/l/cbCaipjIVsFOpEue","pdf",12177,"English","# Addition Practice Problems\n## Answer Key","[{\"question\":\"What is the primary focus of this worksheet?\",\"answer\":\"This worksheet focuses on practicing addition of two-digit whole tens for first-grade students.\"},{\"question\":\"How many addition problems are included in the practice set?\",\"answer\":\"There are twenty distinct addition problems provided in the document.\"},{\"question\":\"Are the answers included in the document?\",\"answer\":\"Yes, the document provides an answer key with the completed sums for all twenty addition problems.\"}]","Adding Whole Tens - Grade 1 Addition Worksheet | PDF"]