Math Is Fun Forum
Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °
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#1 Re: Help Me ! » Divisibility by 7 » 2009-12-08 12:22:35
Wow that is a bit hard to understand.
thanks
-WithOutMusicWeHaveNothing
#2 Re: Help Me ! » Divisibility by 7 » 2009-12-01 14:05:52
Can someone tell me WHY the divisibilty rule for 7 works. I know HOW it works. Please. It's for and extra credit type thing for school. No it's not considered cheating if i use the internet as my teacher clearly stated. it's kind of a contest to see who can explain it first. And useing the internet is allowed. Thanks
Oh and i'm only in 8th grade so if you could explain it in a way that i would understand that would be great. 
-WithOutMusicWeHaveNothing
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