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The answer key provides the final results for each item, along with the intermediate guided moves represented by added quantities like +10,000, +2,000, +200, +20, and +8 for each 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1.\u003Cbr>2. | Answers |\n| --- | --- | --- |\n|  |  |  |\n|  |  |  |\n| 2) 50,180 + 17,913 =   50,180\u003Cbr>| 3.\u003Cbr>4. |  |\n|  |  |  |\n|  |  |  |\n| 3) 89,601 + 2,561 =   89,601\u003Cbr>| 5.\u003Cbr>6.\u003Cbr>7. |  |\n|  |  |  |\n|  |  |  |\n|  |  |  |\n| 4) 70,531 + 22,303 =   70,531\u003Cbr>| 8. |  |\n|  |  |  |\n| 5) 62,660 + 36,667 =   62,660\u003Cbr>|  |  |\n| 6) 28,537 + 14,123 =   28,537\u003Cbr>|  |  |\n| 7) 43,011 + 40,931 =   43,011\u003Cbr>|  |  |\n| 8) 71,856 + 17,605 =   71,856\u003Cbr>|  |  |\n\n[Math](Math www.CommonCoreSheets.com 9 1-8)[ www.CommonCoreSheets.com](Math www.CommonCoreSheets.com 9 1-8)[ 9](Math www.CommonCoreSheets.com 9 1-8)[ 1-8](Math www.CommonCoreSheets.com 9 1-8) 88 75 63 50 38 25 13 0  \n\n|  |  |  |  |  |  |  |  |\n| --- | --- | --- | --- | --- | --- | --- | --- |\n\nAddition Using Open Number Lines  \nName: Answer Key  \n\n| Solve each problem.\u003Cbr>1) 14,905 + 12,228 =  27,133 \u003Cbr>14,905 24,905 26,905 27,105 27,125 27,133\u003Cbr>\u003Cbr>+10,000 +2,000 +200 +20 +8 |  |  | 1.\u003Cbr>2. |  | Answers\u003Cbr>27,133 |  |  |  |  |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |\n|  |  |  |  |  | 68,093 |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |\n| 2) 50,180 + 17,913 =  68,093  |  |  | 3. |  | 92,162 |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |\n| 50, 180 60,180 67,180 68,080 68,090 68,093\u003Cbr>\u003Cbr>+10,000 +7,000 +900 +10 +3\u003Cbr>3) 89,601 + 2,561 =  92,162 \u003Cbr>89,601 91,601 92,101 92,161 92,162\u003Cbr>\u003Cbr>+2,000 +500 +60 +1 |  |  | 4.\u003Cbr>5.\u003Cbr>6.\u003Cbr>7. |  | 92,834 |  |  |  |  |\n|  |  |  |  |  | 99,327 |  |  |  |  |\n|  |  |  |  |  | 42,660 |  |  |  |  |\n|  |  |  |  |  | 83,942 |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |\n| 4) 70,531 + 22,303 =  92,834 \u003Cbr>70, 531 90,531 92,531 92,831 92,834\u003Cbr>\u003Cbr>+20,000 +2,000 +300 +3 |  |  | 8. |  | 89,461 |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |\n| 5) 62,660 + 36,667 =  99,327 \u003Cbr>62,660 92,660 98,660 99,260 99,320 99,327\u003Cbr>\u003Cbr>+30,000 +6,000 +600 +60 +7 |  |  |  |  |  |  |  |  |  |\n| 6) 28,537 + 14,123 =  42,660 \u003Cbr>28, 537 38,537 42,537 42,637 42,657 42,660\u003Cbr>\u003Cbr>+10,000 +4,000 +100 +20 +3 |  |  |  |  |  |  |  |  |  |\n| 7) 43,011 + 40,931 =  83,942 \u003Cbr>43,011 83,011 83,911 83,941 83,942\u003Cbr>\u003Cbr>+40,000 +900 +30 +1 |  |  |  |  |  |  |  |  |  |\n| 8) 71,856 + 17,605 =  89,461 \u003Cbr>71,856 81,856 88,856 89,456 89,461\u003Cbr>\u003Cbr>+10,000 +7,000 +600 +5 |  |  |  |  |  |  |  |  |  |\n| 1-8 | 88 | 75 | 63 | 50 |  | 38 | 25 | 13 | 0 |\n\n[Math](Math www.CommonCoreSheets.com 9)[ www.CommonCoreSheets.com](Math www.CommonCoreSheets.com 9)[ 9](Math www.CommonCoreSheets.com 9)  \nAddition Using Open Number Lines  \nName:  \n\n| Solve each problem.\u003Cbr>1) 14,905 + 12,228 =  \u003Cbr>14,905\u003Cbr>\u003Cbr>+10,000 +2,000 +200 +20 +8 | 1.\u003Cbr>2. | Answers |\n| --- | --- | --- |\n|  |  |  |\n|  |  |  |\n| 2) 50,180 + 17,913 =   | 3. |  |\n|  |  |  |\n| 50,180\u003Cbr>\u003Cbr>+10,000 +7,000 +900 +10 +3\u003Cbr>3) 89,601 + 2,561 =  \u003Cbr>89,601\u003Cbr>\u003Cbr>+2,000 +500 +60 +1 | 4.\u003Cbr>5.\u003Cbr>6.\u003Cbr>7. |  |\n|  |  |  |\n|  |  |  |\n|  |  |  |\n|  |  |  |\n| 4) 70,531 + 22,303 =   70,531\u003Cbr>\u003Cbr>+20,000 +2,000 +300 +3 | 8. |  |\n|  |  |  |\n| 5) 62,660 + 36,667 =   62,660\u003Cbr>\u003Cbr>+30,000 +6,000 +600 +60 +7 |  |  |\n| 6) 28,537 + 14,123 =   28,537\u003Cbr>\u003Cbr>+10,000 +4,000 +100 +20 +3 |  |  |\n| 7) 43,011 + 40,931 =   43,011\u003Cbr>\u003Cbr>+40,000 +900 +30 +1 |  |  |\n| 8) 71,856 + 17,605 =   71,856\u003Cbr>\u003Cbr>+10,000 +7,000 +600 +5 |  |  |\n\nMath  \nModified  \n[www.CommonCoreSheets.com](www.CommonCoreSheets.com)  \n9  \n1-8  88  75  63  50  38  25  13  0","cbCais2TcP71h0yw","https://ap.wps.com/l/cbCais2TcP71h0yw","pdf",63107,"English","# Solve each problem\n## Item 1-8","[{\"question\":\"What method is used to solve the addition problems in this worksheet?\",\"answer\":\"Students use open number lines and break each addend into place-value parts, then move forward from the starting number to reach the sum.\"},{\"question\":\"How are the place-value steps represented?\",\"answer\":\"Each problem shows guided additions such as +10,000, +2,000, +200, +20, and ones to build the total step by step.\"},{\"question\":\"Where can I find the correct answers?\",\"answer\":\"The document includes an answer key section that lists the final result for each of the eight problems (1 through 8).\"}]","Addition Using Open Number Lines - Answer Key | PDF"]