percent proportions

percent proportions

Guided Practice

P =   r

B  100

• P =Part (the smaller petit number the one that is "part" of the bigger number)

  B = base or total (the big number)

  R = percent (the number with %)

Now you try

Multiple Choice

P = r

B 100

6 is 30% of what number?

The number 6 is

• The B (Base or big number)

• The Rate or the % number

• The P (Part of or petit (smaller) number)

Multiple Choice

P = r

B 100

What number is 12% of 25?

The number 25 is

• The B (Base or big number)

• The Rate or the % number

• The P (Part of or petit (smaller) number)

  30    = r         

  150    100   

30 is what percent of 150?

The percent goes over 100,

The 30 is the part of the number,

The big number is 150

48 is what percent 60?

•  48    = r         

   60 100   

• 48 x 100 = 60r

• 4800 = 60r Divide both sides by 60

• r = 80 or 80%

Fill in the Blank

What number is 70% of 50?

 $\frac{p}{B}=\frac{r}{100}$  

Fill in the Blank

20 is 40% of what number?

 $\frac{p}{B}=\frac{r}{100}$  

Fill in the Blank

7 is what percent of 28?

 $\frac{p}{B}=\frac{r}{100}$