prairiewindmomma Posted August 20, 2012 Share Posted August 20, 2012 We took a break from MUS for a while to zip through Singapore Math....I'm putting my 2E child back through MUS for review and we're getting to chapter 10 which is about dividing fractions..... Mr. Demme's method seems way more complicated than how I learned in school. He wants the student to divide using the rule of four. I learned to flip and multiply. Do I need to follow his methodology for some greater math purpose that I don't understand, or can I teach my son to flip and multiply? For those who aren't following what I'm saying: His method: 3/6 / 1/2 = 6/12 / 6/12 = 6/6 /1 = 1 My method: 3/6 / 1/2 = 6/6 = 1 OR His method: 2/3 / 3/6 = 12/18 / 9/18 = 12/9 /1 = 12/9 My method: 2/3 / 3/6 = 12/9 Quote Link to comment Share on other sites More sharing options...
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