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It serves as an essential practice tool for developing fundamental mathematical proficiency, improving mental calculation accuracy, and reinforcing the mechanics of column-based addition with regrouping, which is a core skill for primary school mathematics curriculum. 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sum.  \n1. 62  + 566  \n5. 998  + 658  \n9. 995  + 818  \n13. 69  + 945  \n17. 648 + 686  \n2. 384  + 860  \n6. 89  + 678  \n10. 256 + 44  \n14. 420  + 951  \n18. 702 + 847  \n3. 983  \n+ 447  \n7. 832  + 550  \n11. 71 + 471  \n15. 708  + 511  \n19. 115 + 453  \n4. 210 + 40  \n8. 413 + 23  \n12. 478  + 595  \n16. 254  + 432  \n20. 701 + 89  \nAdding 3-digit numbers in columns  (with regrouping)   \nGrade 3 Addition Worksheet  \nFind the sum.  \n1. 62 + 566  628   \n5. 998 + 658  \n 1,656   \n9. 995 + 818  \n 1,813   \n13. 69 + 945  \n 1,014   \n17. 648 + 686  \n 1,334   \n2. 384 + 860  \n 1,244   \n6. 89 + 678  767   \n10. 256  \n+ 44  \n300  \n14. 420 + 951  \n 1,371   \n18. 702 + 847  \n 1,549   \n3. 983 + 447  \n 1,430    \n7. 832 + 550  \n 1,382   \n11. 71 + 471  \n  542    \n15. 708 + 511  \n 1,219   \n19. 115 + 453  568   \n4. 210 + 40 250  \n8. 413 + 23 436  \n12. 478 + 595  \n 1,073   \n16. 254 + 432  686   \n20. 701 + 89  \n790","cbCaijt5BiTO4QYk","https://ap.wps.com/l/cbCaijt5BiTO4QYk","pdf",14748,"English","# Addition Practice Exercises\n## Problems 1-20","[{\"question\":\"What is the primary focus of this worksheet?\",\"answer\":\"The worksheet focuses on practicing the addition of 3-digit numbers with regrouping for Grade 3 students.\"},{\"question\":\"How many addition problems are included in this document?\",\"answer\":\"There are 20 addition problems in total, presented in a column format.\"},{\"question\":\"Are the answers provided in the document?\",\"answer\":\"Yes, the document includes both the problem statements and their corresponding sums to assist in self-correction and assessment.\"}]","Grade 3 Addition Worksheet - Adding 3-Digit Numbers with Regrouping | PDF"]