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# Need help with Singapore bar diagrams

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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?

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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

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Thank you. That actually did make sense to me.

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