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Percent of a Number

VIEWS: 63 PAGES: 17

									by D. Fisher

1. a. What is 20% of 80?

4
%
b. Why is four wrong?

1. a. What is 20% of 80?

1600
%
c. Why is one thousand six hundred wrong?

1. a. Find 20% of 80.
16 or 16.00
80 x .20 00 160 16 00

%
d. Why is one fourth right?

2. a. What is 35% of 20?

7.35
%

b. Why is seven and thirty-five hundredths wrong?

2. a. What is 35% of 20?

700
%

c. Why is seven hundred wrong?

2. a. Find 35% of 20.
20 x .35 100 60 7.00

7 or 7.00

d. Why is seven right?

3. a. There is a discount of 25% off on a $60 pair of shoes. How much are the shoes?

%

$25

b. Why is twenty-five dollars wrong?

3. a. There is a discount of 25% off on a $60 pair of shoes. How much are the shoes?

%

$15

c. Why is fifteen dollars wrong?

3. a. There is a discount of 25% off on a $60 pair of shoes. How much are the shoes?
$60 x .25 300 120 $15.00 $60 - 15 $45

$45

d. Why is forty-five dollars correct?

4. a. A shirt cost $30 plus 7% tax. What is the total cost?

%

$37

b. Why is thirty-seven dollars wrong?

4. a. A shirt cost $30 plus 7% tax. What is the total cost?

%

$2.10

c. Why is two dollars and ten cents incorrect?

4. a. A shirt cost $30 plus 7% tax. What is the total cost?
$30 x .07 $2.10 $30.00 + 2.10 $32.10

$32.10

d. Why is thirty-two dollars and ten cents correct?

5. a. A $300 bike is on sale. How much is the cost?

$275
%

b. Why is two hundred seventy-five dollars wrong?

5. a. A $300 bike is on sale. How much is the cost?

$75
%

c. Why is seventy-five dollars wrong?

5. a. A $300 bike is on sale. How much is the cost?
$300 x .25 1500 60 $75.00 $300 - 75 $225

$225

d. Why is two hundred twenty-five dollars correct?

Remember how to


								
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