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+ 96 + 13 =   2. 56 + 70 + 2 =   3. 96 + 2 + 22 =   4. 4 + 89 + 52 =   5. 32 + 81 + 29 =   6. 46 + 30 + 36 =   7. 8 + 45 + 2 =   8. 4 + 5 + 6 =   9. 27 + 76 + 99 =   10. 83 + 19 + 5 =   11. 1 + 75 + 1 =   12. 5 + 8 + 75 =   13. 7 + 6 + 35 =   14. 3 + 20 + 5 =   15. 90 + 93 + 7 =   16. 45 + 44 + 9 =   17. 4 + 2 + 7 =   18. 8 + 81 + 16 =    \n19. 29 + 5 + 91 =   20. 23 + 33 + 2 =    \nOnline reading & math for K-5 © [www.k5learning.com](www.k5learning.com)  \nMental math: adding three 1 and 2-digit numbers  \nGrade 4 Addition Worksheet  \nFind the sum.  \n1. 40 + 96 + 13 =  149  2. 56 + 70 + 2 =  128   \n3. 96 + 2 + 22 =  120  4. 4 + 89 + 52 =  145   \n5. 32 + 81 + 29 =  142  6. 46 + 30 + 36 =  112   \n7. 8 + 45 + 2 =  55  8. 4 + 5 + 6 =  15   \n9. 27 + 76 + 99 =  202  10. 83 + 19 + 5 =  107   \n11. 1 + 75 + 1 =  77  12. 5 + 8 + 75 =  88   \n13. 7 + 6 + 35 =  48  14. 3 + 20 + 5 =  28   \n15. 90 + 93 + 7 =  190  16. 45 + 44 + 9 =  98   \n17. 4 + 2 + 7 =  13  18. 8 + 81 + 16 =  105   \n19. 29 + 5 + 91 =  125  20. 23 + 33 + 2 =  58","cbCaiv5OcvvhBEBz","https://ap.wps.com/l/cbCaiv5OcvvhBEBz","pdf",13726,"English","# Mental Math Exercises\n## Answer Key","[{\"question\":\"What is the primary focus of this Grade 4 worksheet?\",\"answer\":\"The worksheet is designed to help students improve their mental math skills by practicing the addition of three numbers, specifically combinations of 1-digit and 2-digit integers.\"},{\"question\":\"How many addition problems are included in the practice set?\",\"answer\":\"There are 20 distinct addition problems provided for students to solve.\"},{\"question\":\"Does this document include the results for the practice problems?\",\"answer\":\"Yes, the document provides the completed addition problems with their respective sums to serve as an answer key.\"}]","Grade 4 Addition Worksheet - Adding Three Numbers Mental Math | PDF"]