AzizHusain

Interesting...I wonder what type of questions appear on the NY & CA Common Core! I remember taking the CSTs (California Standardized Test) a long time ago and those questions were pretty hard at the time...

Yes, I forgot about the left-to-right rule...sorry about that. 

Esta pregunta necesita numeros y mas informacion!

You can think of this as moving the decimal place 34 times to the right...a general rule for anything that is in a similar format, X 10^(#), is you move the decimal place either to the left, if the exponent is negative, or to the right, if the exponent is positive. In this case, we have 34, a positive number, so we have to move the decimal place 34 times to the right and continue to add zeros until we reach the desired position.

0.20 --> 2000000000000000000000000000000000.

0.5 mg --> 1 mg = 1 X 10^-6 kg --> 5 X 10^-7 kg

48.5343836 kilograms x .5mg =

48.5343836 kilograms x 5 X 10^-7 kg = 

48.5343836*(5*10^-7) =

0.0000242671918.

"

1. The  sun's circumference is about 2,713,406 miles (4,366,813 km). The total volume of the  sun is 1.4 x 1027 cubic meters. About 1.3 million Earths could fit inside the  sun. The mass of the  sun is 1.989 x 1030 kilograms, about 333,000 times the mass of the Earth."

9-5+17=9-22= -13.

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(1)       2,8,25,50,75,100  Magic number is 431

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$$\left[\frac{75 + 25}{50}+2 \right]*\left[100+8 \right]\Rightarrow$$  For this one, 431/108 is 3.99 but can it be rounded to 4?

$$\left[\frac{100+8}{\frac{75}{2}-25}\right]*50\rightarrow$$  For this one, rats...result is 8.64 after dividing the first part; too bad it can't be 8.62! Does it have to be the exact number or can it be rounded to 8.6...if so, then 431.5!