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2. 900 + 300 =   3. 900 + 200 =   4. 600 + 200 =   5. 200 + 500 =   6. 800 + 800 =   7. 600 + 400 =   8. 800 + 700 =   9. 600 + 100 =   10. 400 + 300 =   11. 700 + 300 =   12. 700 + 100 =   13. 900 + 600 =   14. 600 + 700 =   15. 200 + 600 =   16. 800 + 100 =   17. 500 + 600 =   18. 400 + 900 =    \n19. 400 + 400 =   20. 500 + 400 =    \nMental math: adding whole hundreds  \nGrade 4 Addition Worksheet  \nFind the sum .  \n1. 200 + 200 =  400  2. 900 + 300 =  1,200   \n3. 900 + 200 =  1,100  4. 600 + 200 =  800   \n5. 200 + 500 =  700  6. 800 + 800 =  1,600   \n7. 600 + 400 =  1,000  8. 800 + 700 =  1,500   \n9. 600 + 100 =  700  10. 400 + 300 =  700   \n11. 700 + 300 =  1,000  12. 700 + 100 =  800   \n13. 900 + 600 =  1,500  14. 600 + 700 =  1,300   \n15. 200 + 600 =  800  16. 800 + 100 =  900   \n17. 500 + 600 =  1,100  18. 400 + 900 =  1,300   \n19. 400 + 400 =  800  20. 500 + 400 =  900   \nOnline reading & math for K-5 © [www.k5learning.com](www.k5learning.com)","cbCainHsmCCCtYXL","https://ap.wps.com/l/cbCainHsmCCCtYXL","pdf",13851,"English","# Mental Math - Adding Whole Hundreds\n## Practice Problems\n## Answer Key","[{\"question\":\"What is the primary objective of this worksheet?\",\"answer\":\"The worksheet aims to help Grade 4 students practice and master the mental addition of whole hundreds to improve computational speed and accuracy.\"},{\"question\":\"How many addition problems are included in the worksheet?\",\"answer\":\"The worksheet contains a total of twenty individual addition problems involving various combinations of hundreds.\"},{\"question\":\"Does the document provide the solutions to the math problems?\",\"answer\":\"Yes, the document includes a completed section that serves as an answer key for all twenty problems listed.\"}]","Mental Math - Adding Whole Hundreds - Grade 4 Addition Worksheet | PDF"]