D.T.'s Fun With Math-EightFacts About The Number Eight********Base eight is like base ten ... if you're missing two fingers --- Tom Lehrer from his novelty tune New Math You multiply each of the digits by the place they're slotted like this: ******* + *6+2 ****** + **5+3 ***** + ***4+4 **** + ****NOTE: You can also reverse the digits 7+1 to get 1+7 and it will still be 8; same with 6+2 and 5+3; try it yourself and see. ******** - *10-2 ********* - **12-4 *********** - ****Do you see a pattern developing? If you increase the first part of 9-1 (9) by one and you also do the same with the second part (1), you still get 8. Even if you have gotten up to 2,355,665,488-2,355,665,480 it will still get 8. Go ahead and try it with even higher numbers. **** & ****Two rows of 4 added together produce 8, because 4*2 is 4 added to itself twice like this: 4+4. Likewise, 2*4 is also 8 because you are adding four 2's together like this: 2+2+2+2, or like this: ** & ** & ** & ********** / ********You originally have 16 balls, and you split it into 2 piles, you get 8 in each pile. Now, that is the same as dividing 8 into one pile, as in 8/1=8, but 16/2=8, so is 32/4=8, even 65,536/8,192=8. How could this be? Simple. The dividend on the left and the divisor in the middle are multiplied by the same factor from the original 8/1 fraction so that the ratio is always 8:1, or simply 8. ********The 2 in the 2^3 is the base and the 3 is the exponent, meaning how many bases should be multiplied by each other. Thus, 2^3 can be represented as 2*2*2, where you multiply the first twos together to get 4, then you multiply that result by the last two to get 8; Hence: (2*2)*2=4*2=8. If 2^3=8, does 3^2=8 also? Let's see here: ******** ******** ******** ******** ******** ******** ******** ******** You can see that if you take 64 of something and arrange it so that its contents are a perfect square, you will get exactly 8 rows of 8 colums of balls. You can also imagine that you can get 8 if you take the cube root of 512. Since this computer cannot display balls in 3-D, you'll have to get that many blocks, and build a base 8 by 8 and stack the blocks 8 high. You'll use exactly 512 blocks to build that perfect cube. |
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