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70 + 20 + 70 =   2. 90 + 70 + 70 =   3. 30 + 10 + 60 =   4. 40 + 40 + 90 =   5. 90 + 60 + 50 =   6. 10 + 10 + 60 =   7. 60 + 60 + 90 =   8. 60 + 50 + 40 =   9. 30 + 40 + 50 =   10. 80 + 40 + 90 =   11. 80 + 30 + 80 =   12. 80 + 90 + 10 =   13. 70 + 20 + 80 =   14. 80 + 20 + 10 =   15. 10 + 70 + 20 =   16. 90 + 50 + 50 =   17. 50 + 90 + 50 =   18. 10 + 70 + 50 =    \n19. 50 + 40 + 90 =   20. 10 + 50 + 20 =    \nAdding whole tens (three 2-digit numbers)   \nGrade 3 Addition Worksheet  \nFind the sum.  \n1. 70 + 20 + 70 =  160  2. 90 + 70 + 70 =  230   \n3. 30 + 10 + 60 =  100  4. 40 + 40 + 90 =  170   \n5. 90 + 60 + 50 =  200  6. 10 + 10 + 60 =  80   \n7. 60 + 60 + 90 =  210  8. 60 + 50 + 40 =  150   \n9. 30 + 40 + 50 =  120  10. 80 + 40 + 90 =  210   \n11. 80 + 30 + 80 =  190  12. 80 + 90 + 10 =  180   \n13. 70 + 20 + 80 =  170  14. 80 + 20 + 10 =  110   \n15. 10 + 70 + 20 =  100  16. 90 + 50 + 50 =  190   \n17. 50 + 90 + 50 =  190  18. 10 + 70 + 50 =  130   \n19. 50 + 40 + 90 =  180  20. 10 + 50 + 20 =  80","cbCaiokwWCISxpBq","https://ap.wps.com/l/cbCaiokwWCISxpBq","pdf",13313,"English","# Addition Practice Exercises\n## Answer Key","[{\"question\":\"What is the primary focus of this worksheet?\",\"answer\":\"The worksheet focuses on practicing the addition of three 2-digit numbers, where each number is a multiple of ten.\"},{\"question\":\"What grade level is this worksheet intended for?\",\"answer\":\"This document is specifically designed for Grade 3 students as an addition practice exercise.\"},{\"question\":\"Does the document include solutions for the problems?\",\"answer\":\"Yes, the document provides an answer key containing the correct sums for all twenty addition problems listed.\"}]","Adding Whole Tens - Grade 3 Addition Worksheet | PDF"]