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Rounding By Mr. Walker

Rounding

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Rounding. By Mr. Walker. Using The Cinderella Story. Locate Cinderella. 1,365,429. In any given number, Cinderella is the digit that is underlined. 1,3 6 5,429. If there are no digits underlined, then the directions will tell you what place Cinderella is in. - PowerPoint PPT Presentation

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Page 1: Rounding

Rounding

By Mr. Walker

Page 2: Rounding

UsingThe Cinderella Story

Page 3: Rounding

Locate Cinderella

1,365,429

In any given number, Cinderella is the digit that is underlined

If there are no digits underlined, then the directions will tell you what place Cinderella is in

1,365,429

1,365,429

Round to the ten thousands place

Page 4: Rounding

The Fairy GodmotherCinderella can’t go to the ball without some help from the Fairy Godmother

1,365,429

The Fairy Godmother always comes in on Cinderella’s right

She is a little round, so circle the Fairy Godmother

Page 5: Rounding

Does She Have the Power?

To get Cinderella to the ball, the Fairy Godmother needs to do a bit of magic, but it all depends on the power in her wand

If the power in her wand is 5 or more, then she has enough power to change Cinderella

If her wand is 4 or less then Cinderella is out of luck and will stay the same scrubbing the floors

5

9

0

Page 6: Rounding

Does She Have the Power?

1,365,429

If we look at our number, the Fairy Godmotherhas a 5, so she does have enough power to change Cinderella

1,365,429When the Fairy Godmother uses her power to dress up Cinderella

Cinderella’s number goes up by one

1,375,429

Page 7: Rounding

Bye Fairy Godmother

1,375,429

The Fairy Godmother’s job is done and her power is all gone, so she disappears (the 5 changes to a 0)

The rest of the numbers after the Fairy Godmother get changed to zeros as well

1,370,4291,370,000

Page 8: Rounding

The Sisters

1,370,000

After changing and rounding, don’t forget that the evil step sisters (the numbers in front of Cinderella) always follow her around to make fun of her

They go to the ball with her if she gets changed and they stay at home mocking her if she does not get changed (always put thosenumbers back on the front when you are done)

Page 9: Rounding

Not Enough Power

1,363,429If we look at our number, the Fairy Godmotherhas a 3, so she does not have enough power to change Cinderella

Lets try a number where the Fairy Godmother does not have enough power to change Cinderella

1,360,000

The Fairy Godmother tried her best but could not do it, and now what little power she had is gone, so she disappears (the 3 changes to a 0)

The rest of the numbers after the Fairy Godmother get changed to zeros as well

1,360,429

Page 10: Rounding

The Sisters

1,360,000

After changing and rounding, don’t forget that the evil step sisters (the numbers in front of Cinderella) always follow her around to make fun of her

They go to the ball with her if she gets changed and they stay at home mocking her if she does not get changed (always put thosenumbers back on the front when you are done)

Page 11: Rounding

Try These

1,234,674

1,235,000

1,234,674

1,234,670

1,234,674

1,200,000

1,934,674

2,000,000

1,299,674

1,300,000

1,234,674

1,234,700