cintinative Posted January 9, 2017 Share Posted January 9, 2017 I cannot figure out how they got the answer for this (yes, I looked at the key) or understand the model they drew, so I am at a loss. I keep getting a different answer. Help? from MIF5A Extra Practice p 93 Reena and Pauline have some bookmarks. If Reena gives Pauline 28 bookmarks, they will have the same number of bookmarks. If Pauline gives Reena 35 bookmarks, she will have 1/3 of what Reena has. How many bookmarks does Reena have? TIA!!! Quote Link to comment Share on other sites More sharing options...
cmarthur Posted January 9, 2017 Share Posted January 9, 2017 Here are two ways to solve it. http://www.onsponge.com/forum/35-thinkingmath/9340-challenging-p5-problem-sums-urgent-help-needed https://answers.yahoo.com/question/index?qid=20070412065213AAxbYzP Sometimes it just takes a different view to understand it. 1 Quote Link to comment Share on other sites More sharing options...
Clemsondana Posted January 9, 2017 Share Posted January 9, 2017 When I saw 5A, I at first assumed Singapore math so I solved it with bar models. First, I made same-sized boxes for Reena ® and Pauiline (P). Then I gave R 56 more, because if she gives P 28 they will have the same number - she'd be giving P half of what she has that is more than what P has. Then it says that if P gives R 35, she will have 1/3 of what R has. So, take 35 from P's 'box' and give it to R. When. you take 35 from P anhd give it to R, there's a new difference of 70 more between P's small box and R's total amount. So, 126 is the difference, and equals 2/3 of what P now has. So, the remaining 1/3 is 63 - that's what P has if she gives away 35. So, she started with 63+35, or 98. R has 98 + 56. 1 Quote Link to comment Share on other sites More sharing options...
cintinative Posted January 9, 2017 Author Share Posted January 9, 2017 When I saw 5A, I at first assumed Singapore math so I solved it with bar models. First, I made same-sized boxes for Reena ® and Pauiline (P). Then I gave R 56 more, because if she gives P 28 they will have the same number - she'd be giving P half of what she has that is more than what P has. Then it says that if P gives R 35, she will have 1/3 of what R has. So, take 35 from P's 'box' and give it to R. When. you take 35 from P anhd give it to R, there's a new difference of 70 more between P's small box and R's total amount. So, 126 is the difference, and equals 2/3 of what P now has. So, the remaining 1/3 is 63 - that's what P has if she gives away 35. So, she started with 63+35, or 98. R has 98 + 56. It is Singapore Math style. It's just Math in Focus vs. Singapore Math Standards etc. Quote Link to comment Share on other sites More sharing options...
cintinative Posted January 9, 2017 Author Share Posted January 9, 2017 Thanks. I figured out that I had an error in the beginning part which made the latter part wrong also. Quote Link to comment Share on other sites More sharing options...
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