220% of a number is 2.2 multiplied by that number, so 220% of 0.00022 is equal to

$\displaystyle 2.2 \times 0.00022 = 0.000484$.

Taking 3.33% percent of a number is the same as multiplying it by 0.0333, so 3.33% percent of 3.33 is equal to

$\displaystyle 0.0333 \times 3.33 = 0.110889$.

$\displaystyle 25\%$ of the voters were registered as Republicans, so the rest - $\displaystyle 75\%$ - were not. Therefore, we want to calculate $\displaystyle 75\%$ of $\displaystyle 20,566$, or, equivalently, 

$\displaystyle 20,566 \times 0.75 = 15,424.5$

which, to the nearest whole number, rounds to $\displaystyle 15,425$ voters

One way to figure out what number is a percentage of a larger number is to convert the percent into a decimal and multiply it by the whole number. Since $\displaystyle 60\%$ is equal to $\displaystyle 0.60$, multiply this by $\displaystyle 90$.

$\displaystyle 90 \times 0.60=54$

$\displaystyle 54$ is your answer.

Rewrite $\displaystyle 125\%$ as a decimal by writing $\displaystyle 125$ with a decimal point, then shifting it two spaces left:

$\displaystyle 125.0\% = 1.25$

Multiply this by $\displaystyle 125$:

$\displaystyle 125 \times 1.25 = 156.25$

Larry bought the remaining stock which was $\displaystyle 10$% $\displaystyle 100-90=10$.  Then was given $\displaystyle 5$% by three different individuals $\displaystyle (5*3=15)$.  Larry then owned $\displaystyle 25$% $\displaystyle (10+15=25)$ not $\displaystyle 30$%

In order to convert numbers to a percent, it is easiest to set up a ratio. 

We know that percent is just per-cent or per-100, another way to write this is to divide the number by 100. 

We would set up the ratio below with x being the number we are looking for: 

$\displaystyle \frac{x}{100}=\frac{12}{25}$

Now we cross multiply 25 times x and 12 times 100 to get: 

$\displaystyle 25x=1200$

Dividing both sides by 25 will give us the percent. 

$\displaystyle \frac{25x}{25}=\frac{1200}{25}$

On the left side the 25's will cancel to give us x, on the right side we may need to do some long division to eventually find that 1200/25 = 48.

The circle is divided into 16 portions; 75% of this is

$\displaystyle 16 \times 75 \% = 16\times 0.75= 12$ squares.

5 portions are already shaded in, so it is necessary to shade in

$\displaystyle 12- 5 = 7$ more portions.

The rectangle is divided into 20 squares; 60% of this is

$\displaystyle 20 \times 60 \% = 20 \times 0.60 = 12$ squares.

7 squares are already shaded in, so it is necessary to shade in

$\displaystyle 12 - 7 = 5$ more squares.

To find a percentage of a whole number, we will multiply the percentage by the whole number.  So, we get

$\displaystyle 63\% \cdot 300$

$\displaystyle \frac{63}{100} \cdot 300$

$\displaystyle \frac{63}{100} \cdot \frac{300}{1}$

Now, the zeros can cancel out.  So, we get

$\displaystyle \frac{63}{1} \cdot \frac{3}{1}$

$\displaystyle \frac{63 \cdot 3}{1 \cdot 1}$

$\displaystyle \frac{189}{1}$

$\displaystyle 189$

Therefore, 63% of 300 is 189.