Math Is Fun Forum

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

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#2 Re: Introductions » Hello » 2009-11-25 07:48:03

hey im just strting algbra im 11 years . do u have any edvice

#3 Re: Help Me ! » mental maths » 2009-11-25 07:43:06

the beast way i know is +160and 170 =330-280=50 that is how i do my math here r som more.
            670+700-?=800
              590-40+?=900

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