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These exercises are structured to reinforce basic arithmetic fluency and conceptual understanding of base-ten numbering systems, serving as an effective tool for classroom instruction or independent home practice. 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9 =   3) 70 + 6 =   4) 80 + 6 =   5) 30 + 1 =   6) 20 + 3 =   7) 20 + 9 =   8) 20 + 7 =   9) 50 + 0 =   10) 40 + 4 =   11) 50 + 7 =   12) 30 + 4 =   13) 40 + 7 =   14) 40 + 4 =   15) 30 + 9 =   16) 90 + 8 =   17) 50 + 0 =   18) 70 + 3 =    \n19) 10 + 3 =   20) 40 + 0 =    \nAdding whole tens and ones   \nGrade 1 Place Value Worksheet  \nFind the sum .  \n1) 70 + 9 = 79  2) 60 + 9 = 69   \n3) 70 + 6 = 76  4) 80 + 6 = 86   \n5) 30 + 1 = 31  6) 20 + 3 = 23   \n7) 20 + 9 = 29  8) 20 + 7 = 27   \n9) 50 + 0 = 50  10) 40 + 4 = 44   \n11) 50 + 7 = 57  12) 30 + 4 = 34   \n13) 40 + 7 = 47  14) 40 + 4 = 44   \n15) 30 + 9 = 39  16) 90 + 8 = 98   \n17) 50 + 0 = 50  18) 70 + 3 = 73   \n19) 10 + 3 = 13  20) 40 + 0 = 40","cbCaieB3JHb7AQT6","https://ap.wps.com/l/cbCaieB3JHb7AQT6","pdf",12155,"English","# Adding Whole Tens and Ones Worksheet\n## Answer Key","[{\"question\":\"What is the purpose of this worksheet?\",\"answer\":\"This worksheet is designed for first-grade students to practice adding whole tens and ones to improve their understanding of place value and arithmetic skills.\"},{\"question\":\"How many problems are included in this worksheet?\",\"answer\":\"There are 20 problems provided, each involving the addition of a two-digit multiple of ten and a single-digit number.\"},{\"question\":\"Does the document include solutions?\",\"answer\":\"Yes, the second page of the document provides an answer key with the completed sums for all 20 problems.\"}]","Grade 1 Adding Whole Tens and Ones - Math Worksheet | PDF"]