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A comprehensive answer key is included at the end to facilitate self-assessment and guided learning for students and parents alike. 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One day, she organized a cleanup drive to help reduce pollution.  \n1. They started by cleaning the rivers that flow through the city. If her group was able to collect 387 pounds of garbage and another group gathered 39 pounds less than Lizzie’s group, how much garbage were the two groups able to gather?  \n2. After cleaning the rivers, they went on to tidy up farmland.  \nLizzie’s group cleared 250 acres of land and the other group cleared 265 acres. If there is a total of 900 acres of land, how many more acres of land remain to be cleared?  \n3. The city has 1,200 people living in 453 houses. The two groups will also collect garbage from all the houses. If Lizzie’s group visited 238 houses while the other group visited 190, how many more houses remain?  \n4. If Lizzie’s group is composed of 54 people and they have 17 more members than the other group, how many people are working all together to clean the city?  \n5. Finally, they had to inspect factories to make sure they are treating their waste properly. If Lizzie’s group went to 69 factories, the second group went to 52 factories, and the two groups visited another 48 factories together, how many factories were inspected in total?  \nReading and Math for K-5 © [www.k5learning.com](www.k5learning.com)  \nAnswers  \n1. First, 387 – 39 = 348; then, 387 + 348 = 735 They were able to gather 735 pounds of garbage.  \n2. First, 250 + 265 = 515; then , 900 – 515 = 385  \n385 acres of land remains to be cleared.  \n3. 238 + 190 = 428; then , 453 – 428 = 25  \n25 houses remain.  \n4. First, 54 – 17 = 37; then, 54 + 37 = 91 There are 91 people working to clean the city.  \n5. 69 + 52 + 48 = 169  \n169 factories were inspected in total.  \nReading and Math for K-5 © [www.k5learning.com](www.k5learning.com)","cbCaic74eaeO9Rgb","https://ap.wps.com/l/cbCaic74eaeO9Rgb","pdf",82659,"English","# Word Problems\n## Answer Key","[{\"question\":\"How much total garbage was collected by both groups in the first problem?\",\"answer\":\"Lizzie's group collected 387 pounds, and the other group collected 348 pounds (387 - 39), resulting in a total of 735 pounds of garbage.\"},{\"question\":\"How many acres of land remain to be cleared in the second problem?\",\"answer\":\"The two groups cleared 515 acres in total (250 + 265). Subtracting this from the total of 900 acres leaves 385 acres remaining.\"},{\"question\":\"How many people are working together to clean the city according to the fourth problem?\",\"answer\":\"Lizzie's group has 54 members, and the other group has 37 members (54 - 17). Combined, there are 91 people working on the cleanup project.\"}]","Grade 3 Mixed Addition and Subtraction Word Problems - Practice Worksheet | PDF"]