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+--- Thread: What is 7 times 47? (/showthread.php?tid=14626)
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What is 7 times 47? - nannerz - 2009-08-05
I did it automatically as 7x50 - 7x3
And I can't seem to actually access what is in your spoiler, lol.
What is 7 times 47? - Corn - 2009-08-05
MasPan Wrote:I did the math in my head. Didn't picture any paper or pencil, just floating numbers. I also vocalize in my head what I'm thinking to help me keep track of what I'm doing.
This.
What is 7 times 47? - Cactuar - 2009-08-05
7 x 7 = 49
7 x 4 = 28 x 10 = 280
Added them. Technically I did the first one, but I misread it.
What is 7 times 47? - DarkPwnage - 2009-08-05
I multiplied it like it was on paper in the air. I've been trying to train myself to be able to do double digit by double digit multiplication like that recently xP
What is 7 times 47? - MasPan - 2009-08-05
DarkPwnage Wrote:I multiplied it like it was on paper in the air. I've been trying to train myself to be able to do double digit by double digit multiplication like that recently xP
The way I learned to do mental math was simply doing it on every single math question I ever got. Teachers would get annoyed frequently at me not "showing my work." I refused to spend half a minute writing down what I did when it only took 5-10seconds mentally. Writing slows me down, because my hands can't keep up with my brain.