7.8 Exercise supplement

Compare 250 watts to 100 watts by subtraction.

Compare 126 and 48 by subtraction.

Compare 98 radishes to 41 radishes by division.

Compare 144 to 9 by division.

Compare 100 tents to 5 tents by division.

Compare 28 feet to 7 feet by division.

Comparison, by division, of two pure numbers or two like denominate numbers is called a .

A comparison, by division, of two unlike denominate numbers is called a .

15 to 5

72 to 12

8 millimeters to 5 milliliters

106 tablets to 52 tablets

${\displaystyle \frac{9}{16}}$

${\displaystyle \frac{5}{11}}$

$\frac{1\text{ diskette}}{8\text{ diskettes}}$

$\frac{5\text{ papers}}{3\text{ pens}}$

${\displaystyle \frac{9}{16}=\frac{18}{32}}$

${\displaystyle \frac{1}{4}=\frac{12}{48}}$

$\frac{8\text{ items}}{4\text{ dollars}}=\frac{2\text{ items}}{1\text{ dollar}}$

150 milligrams of niacin is to 2 tablets as 300 milligrams of niacin is to 4 tablets.

20 people is to 4 seats as 5 people is to 1 seat.

${\displaystyle \frac{x}{3}=\frac{24}{9}}$

${\displaystyle \frac{15}{7}=\frac{60}{x}}$

${\displaystyle \frac{1}{1}=\frac{x}{44}}$

${\displaystyle \frac{3}{x}=\frac{15}{50}}$

$\frac{15\text{ bats}}{16\text{ balls}}=\frac{\mathrm{x}\text{ bats}}{128\text{ balls}}$

$\frac{36\text{ rooms}}{29\text{ fans}}=\frac{504\text{ rooms}}{\mathrm{x}\text{ fans}}$

On a map, 3 inches represents 20 miles. How many miles does 27 inches represent?

A salt solution is composed of 8 parts of salt to 5 parts of water. How many parts of salt are there in a solution that contains 50 parts of water?

A model is built to ${\displaystyle \frac{4}{15}}$ scale. If a particular part of the model measures 8 inches in length, how long is the actual structure?

The ratio of ammonia to air in a container is ${\displaystyle \frac{3}{40}}$ How many milliliters of air should be in a container that contains 8 milliliters of ammonia?

A 4-foot girl casts a 9-foot shadow at a particular time of the day. How tall is a pole that casts a 144-foot shadow at the same time of the day?

The odds that a particular event will occur are 11 to 2. If this event occurs 55 times, how many times would you predict it does not occur?

Every 1 ${\displaystyle \frac{3}{4}}$ teaspoon of a multiple vitamin, in granular form, contains 0.85 the minimum daily requirement of vitamin A. How many teaspoons of this vitamin are required to supply 2.25 the minimum daily requirement?

0.16

0.818

5.3536

0.50

3

62%

1.58%

9.15%

0.06%

0.003%

${\displaystyle 5\frac{3}{11}}$ % to a three-place decimal

${\displaystyle \frac{9}{13}}$ % to a three-place decimal

82 ${\displaystyle \frac{25}{29}}$ % to a four-place decimal

${\displaystyle 18\frac{1}{7}}$ % to a four-place decimal

${\displaystyle \frac{3}{5}}$

${\displaystyle \frac{2}{10}}$

${\displaystyle \frac{5}{16}}$

${\displaystyle \frac{35}{8}}$

${\displaystyle \frac{105}{16}}$

45 ${\displaystyle \frac{1}{11}}$

6 ${\displaystyle \frac{278}{9}}$

95%

12%

83%

38.125%

$61.\stackrel{\_}{2}\%$

${\displaystyle \frac{5}{8}\%}$

${\displaystyle 6\frac{9}{20}\%}$

${\displaystyle 15\frac{3}{22}}$ %

${\displaystyle 106\frac{19}{45}\%}$

What is 16% of 40?

29.4 is what percent of 105?

${\displaystyle 3\frac{21}{50}}$ is 547.2% of what number?

0.09378 is what percent of 52.1?

What is 680% of 1.41?

A kitchen knife is on sale for 15% off the marked price. If the marked price is $ 39.50, what is the sale price?

On an 80 question geology exam, a student gets 68 correct. What percent is correct?

A salesperson makes a commission of 18% of her monthly sales total. She also receives a monthly salary of $1,600.00. If, in a particular month, she sells $4,000.00 worth of merchandise, how much will she make that month?