Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

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**kittykat01****Member**- Registered: 2010-01-02
- Posts: 3

The examples show that the decimal point moves - it doesn't, the decimal point never moves - the digits move. I am already trying to undo some bad maths teaching and getting kids to understand place value. I have really enjoyed looking through this web site and will use some of it in class (not this page though):)

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,558

Hi, and thanks for the comment.

kittykat01 wrote:

The examples show that the decimal point moves - it doesn't, the decimal point never moves - the digits move.

This must be a point of ignorance for me ... does it matter which one moves, and why?

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 92,390

This must be a point of ignorance for me ... does it matter which one moves, and why?

I don't think it matters, how you view it. Saying that the decimal point moves 2 places to the right (or to the left ) is how I was taught.

**In mathematics, you don't understand things. You just get used to them.**

**I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.**

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**iamfriendly****Member**- Registered: 2009-07-03
- Posts: 72

Well, in my opinion, moving the decimal point is easier than moving all the digits

EYE AM FRIENDLY, THAT'S O U NEED 2 NO,

psst,

Don't trust strangers, EYE AM FRIENDLY, THAT'S O U NEED 2 NO ..........psst, Don't trust strangers......

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**LQ****Real Member**- Registered: 2006-12-04
- Posts: 1,285

To convert % to , you divide by 100 and hence you make your answer one hundred times smaller.

I see clearly now, the universe have the black dots, Thus I am on my way of inventing this remedy...

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