# Teaching rounding decimals

Discussion in 'Fifth Grade' started by SnowDaisy822, Sep 21, 2007.

1. ### SnowDaisy822Companion

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Sep 21, 2007

My last two years I have had the hardest time teaching rounding decimals. They just don't seem to get it! Does anyone have any good techniques that help? I have a rhyme that I thought would help, but it didn't. It's:

Look at the number,
Then look next door,
If it's 5 or more add one more,
If it's 4 or below just ignore.

The kids loved it, but they still don't get it! Help!

3. ### ChristyFModerator

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Sep 21, 2007

I still teach rounding with the technique that my master teacher taught with during student teaching. I bring a helium balloon to class and write a series of numbers on the board (ex 80, 81, 82, and so on to 89). Then I talk about rounding to tens place and we discuss that you use the number just before the one you are rounding to (ones in this case). I hold the balloon string (get one with a long string!) in one hand and start with 80. I ask what number is in ones place. They answer 0 and I hold up zero fingers on the balloon string and ask if the balloon stayed or went up. This goes on until I hit 5. When I hold up five fingers, of course the balloon goes up. That tends to get the idea of "magic 5" across to them. Later I follow it up with number lines and explaining why we go up with 5 or stay below, but the balloon is the one that tends to stick with them.

4. ### smalltowngalMultitudinous

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Sep 21, 2007

What a great idea Christy!! SnowDaisy, I have heard that rhyme so many times, but it does work. Have you tried reciting it with the kiddos a couple of times before practicing rounding?

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