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There are 72 books on the shelf in all. If b represents the number of books in each stack, which equation models this?\u003Cbr>A. b ÷ 3 = 72 B. 3b = 72 C. b − 3 = 72 D. b + 3 = 72 |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |\n| 2) Rachel had a bag of marbles. She gave away 7 of them and has 14 marbles left. If m represents the number of marbles she started with, which equation models this? |  |  |  | 2.\u003Cbr>3. |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |\n| A. m + 7 = 14 B. m ÷ 7 = 14 C. 7m = 14 D. m − 7 = 14\u003Cbr>3) George poured his juice equally into 2 cups. Each cup held 6 ounces. If p represents the number of ounces he started with, which equation models this?\u003Cbr>A. p − 2 = 6 B. 2p = 6 C. p ÷ 2 = 6 D. p + 2 = 6 |  |  |  | 4.\u003Cbr>5. |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |\n| 4) Paul filled 3 cartons with eggs. Each carton held the same number, for 90 eggs altogether. If e represents the number of eggs in each carton, which equation models this? |  |  |  | 6.\u003Cbr>7. |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |\n| A. e + 3 = 90 B. e ÷ 3 = 90 C. e − 3 = 90 D. 3e = 90\u003Cbr>5) Vanessa had some shells in her bucket. She found 2 more and now has 14 shells. If h represents the number of shells she started with, which equation models this? |  |  |  | 8.\u003Cbr>9. |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |\n| A. 2h = 14 B. h ÷ 2 = 14 C. h − 2 = 14 D. h + 2 = 14\u003Cbr>6) A pond held some fish. 5 fish were caught, leaving 35 fish in the pond. If s represents the number of fish the pond held at first, which equation models this?\u003Cbr>A. s + 5 = 35 B. s ÷ 5 = 35 C. s − 5 = 35 D. 5s = 35 |  |  |  | 10. |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |\n| 7) Frank had some points in a game. He earned 9 more points and now has 27 points. If w represents the number of points he started with, which equation models this?\u003Cbr>A. w − 9 = 27 B. w + 9 = 27 C. w ÷ 9 = 27 D. 9w = 27 |  |  |  |  |  |  |  |  |  |  |  |  |\n| 8) A tray of muffins was arranged equally into 3 boxes, with 9 muffins in each box. If t represents the number of muffins on the tray, which equation models this? |  |  |  |  |  |  |  |  |  |  |  |  |\n| A. 3t = 9 B. t ÷ 3 = 9 C. t + 3 = 9 D. t − 3 = 9\u003Cbr>9) A tree held some apples. 2 apples were picked, leaving 12 apples on the tree. Ifa represents the number of apples the tree held at first, which equation models this? |  |  |  |  |  |  |  |  |  |  |  |  |\n| A. a ÷ 2 = 12 B. a − 2 = 12 C. a + 2 = 12 D. 2a = 12\u003Cbr>10) There are 2 equal rows of chairs in the hall. There are 36 chairs altogether. If r represents the number of chairs in each row, which equation models this?\u003Cbr>A. r − 2 = 36 B. r ÷ 2 = 36 C. 2r = 36 D. r + 2 = 36 |  |  |  |  |  |  |  |  |  |  |  |  |\n| 1-10 | 90 | 80 | 70 |  | 60 | 50 |  | 40 | 30 | 20 | 10 | 0 |\n\n[Math](Math www.CommonCoreSheets.com 5)[ www.CommonCoreSheets.com](Math www.CommonCoreSheets.com 5)[ 5](Math www.CommonCoreSheets.com 5)  \nWriting an Equation from a Word Problem  \nName: Answer Key  \n\n| Choose the equation that models each situation. |  |  |  | 1. |  |  | Answers\u003Cbr>B |  |  |  |  |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |\n| 1) A shelf holds 3 equal stacks of books. There are 72 books on the shelf in all. If b represents the number of books in each stack, which equation models this? |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |\n| A. b ÷ 3 = 72 B. 3b = 72 C. b − 3 = 72 D. b + 3 = 72\u003Cbr>2) Ra","cbCainkxcoaB7LXT","https://ap.wps.com/l/cbCainkxcoaB7LXT","pdf",62554,"English","# Choose the equation that models each situation\n## Problem 1-10 (word problems with variables)","[{\"question\":\"What skill do these problems test?\",\"answer\":\"They test writing and selecting the correct equation that represents a given word problem using a variable for the unknown quantity.\"},{\"question\":\"How are the equations presented?\",\"answer\":\"Each situation provides a variable and four multiple-choice equation options labeled A-D.\"},{\"question\":\"What does the answer key provide?\",\"answer\":\"The answer key lists the correct letter choice for each problem from 1 to 10.\"}]","Writing an Equation from a Word Problem - Answer Key | PDF",1790771823]