littlebug42 Posted February 28, 2011 Share Posted February 28, 2011 I posted recently about finally finding math happiness for my dd9 with Singapore. Honestly, I avoided Singapore for so long because I didn't understand it so I am relearning many things with my daughter. Here is my problem. I do not understand the bar diagrams. I have the HIG but my eyes glaze over and I start to get lost. Can someone please explain this to me like you would your child? Use this problem: Mary bought 3 dresses. Each dress cost the same amount. She gave the cashier $20 and got $2 change. How much did each dress cost? I can solve this in my head but using the bar diagrams escapes me. Help? Quote Link to comment Share on other sites More sharing options...
bethben Posted February 28, 2011 Share Posted February 28, 2011 3 dresses [---------][---------][---------]($2) [-----------------$20---------------] let's make each dress one bar. We need to figure out what each bar is. The problem also has $2 in change. Where do we put that? Yes- up by the dresses because that is the extra money we have and we need to keep it with our costs. What we gave the cashier is $20. How do we get rid of that 2 extra dollars on top? We subtract it from the $20. What is your answer? $18. Now we're just left with the cost of the dresses. How many dresses do we have? 3 How much for all the dresses? $18. How much is each dress? $6 It's so hard to draw this on a computer! Beth Quote Link to comment Share on other sites More sharing options...
littlebug42 Posted February 28, 2011 Author Share Posted February 28, 2011 Thank you. That actually did make sense to me. Quote Link to comment Share on other sites More sharing options...
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