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_ 2) _ 4 3) 36 4) 78  \n+  _ 1  −  5 _  +  4 _  −  _ 6   \n78 43 _ 1 5 _  \n5) 8 _ 6) 65 7) 6 _ 8) 81 +  46  −  _ 3  +  29  −  _ 8   \n1 _ 9 5 _ _ 2 5 _  \n9) _ 7 10) 83 11) 55 12) 76  \n+  3 _  −  _ 6  +  6 _  −  1   \n82 2 _ _ 23   0  \n13) _ 7 14) _ 3 15) 3 _ 16) 9 _  \n+  4 _  −  1 _  +  _ 6  −  _ 2   \n103 47 65 46  \n17) 74 18) _ 3 19) 4 _ 20) 87  \n+  6 _  −  5 _  +  _ 7  −  _ 8   \n1 _ 3 39 136 1 _  \n2-DIGIT ADDITION AND SUBTRACTION CHALLENGE 1 ANSWERS  \n1) 57  2)  94 3) 36 4) 78  \n+  21  −  51  +  45  −  26   \n78 43  81 52  \n5) 83  6) 65 7) 63  8) 81 +  46  −  13  +  29  −  28   \n129 52   92 53  \n9)  47 10) 83 11) 55 12) 76  \n+  35  −  56  +  68  −  16   \n82 27   123  60  \n13)  57 14)  63 15) 39  16) 98  \n+  46  −  16  +  26  −  52   \n103 47 65 46  \n17) 74 18)  93 19) 49  20) 87  \n+  69  −  54  +  87  −  68   \n143 39 136 19","cbCaide5xzBpdR0B","https://ap.wps.com/l/cbCaide5xzBpdR0B","pdf",189661,"English","# Problem Sets\n## 2-Digit Addition and Subtraction Problems\n# Answer Key\n## 2-Digit Addition and Subtraction Challenge 1 Answers","[{\"question\":\"What is the objective of the exercises in this document?\",\"answer\":\"The objective is to work out the values of missing digits in 2-digit addition and subtraction problems.\"},{\"question\":\"How many math problems are included in this challenge?\",\"answer\":\"There are twenty distinct 2-digit addition and subtraction problems provided in the exercise set.\"},{\"question\":\"Are the solutions to the problems provided?\",\"answer\":\"Yes, the document includes a comprehensive answer key at the end that provides the correct values for every missing digit in the twenty exercises.\"}]","2-Digit Addition and Subtraction Challenge 1 - Math Practice Exercises | PDF",1792668819]