So, I will be writing about exponents today. Exponents are pretty simple, for example, what is 5^2 would simply be 5 * 5 which would make 25. Pretty easy right? Well here’s where it gets complicated in the negative exponents. But let me show you something, 9^-2 seems pretty hard but all you do is put a 1/ over the answer to the exponent but positive, your answer would be 1/81. If you are doing fraction like 3/4^-2. You simply just flip the numbers, making it 4/3 and the act as if the exponent is positive, resulting in 16/9. Also, remember that if anything has an exponent of ^1 is is just the original number. However, if it is an exponent of ^0 remember that it is ALWAYS 1. And that is exponents.
Monthly Archives: September 2014
Estimating Square Rots
My number is 79. I started off by finding the two closest integers, which are 8 and 9. I then subtracted those square roots, which are 64 and 81 to get 17. the middle of 17 is 8.5 so I added 8.5 to 64, getting 72.5. The middle of 8 and 9 is 8.5 so it leads to believe that the square root of 72.5 is 8.5. Now back to 79, it’s closer to 81 than 72.5 so I knew that it would either be 8.6, 8.7, 8.8, or 8.9. I couldn’t decide whether it was one other other so i went with about 8.86. In conclusion, I estimate that the square root of 79 is about 8.86.
Hello
This is my first post and I want to talk about multiplying/dividing negative numbers and adding/subtracting negative numbers. One rule to multiplying and dividing negative numbers is that if there is only one negative number in it, the answer will be negative, but if there is two than the answer will be positive. For example, -25*3=-75 or -5*-5=-25
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