Multiplying Fractions
Operations with Decimals
Constant of Proportionality
Unit Rate
Writing Equations
100

Solve

12 x 1/2

6

100
Solve.

1.2 x 3

3.6

100

Find the Constant of Proportionality (k).

x | 1 | 2 | 3 | 4

y | 3 | 6 | 9 | 12

k = 3

100

Maria walks 12 miles in 3 hours. How many miles does she walk per hour?

4 miles per hour

100

The job paid \$25 for every 2 hours of work.

Write an equation that represents how much the job pays, y, for x hours of work.

y = 12.5x

200

Solve

3/4 x 4

3

200
Solve.

3.4 x 5

17

200

Find the Constant of Proportionality (k).

x | 11 |  9  |  4  |  2

y | 77 | 63 | 28 | 14

k = 7

200

A pump moves 42 gallons in seven minutes. Find the unit rate.

6 gallons per minute

200

Ms. Pandolfi bought 6 ice cream cakes for \$48 dollars.

Write an equation that represents the total cost, y, of x ice cream cakes.

y = 8x

300

Solve

2/3 x 4/10

4/15

300

Solve.

2.1 x 0.5

1.05

300

Find the Constant of Proportionality (k).

x |  5  |  7  |  9  | 12

y | 40 | 56 | 72 | 96

k = 8

300

You score 84 points in six games. How much do you score per game?

14 points per game

300

The cost of 3 tickets to the concert is \$27.

Find the constant of proportionality and write an equation for the problem.

k = 9

y=9x

400

Solve

150 x 2/15

20

400

Solve.

3.5 x 2.5

8.75

400

Find the Constant of Proportionality (k).

x | 30 | 20 |   5  | 0

y | 15 | 10 | 2.5 | 0

1/2

0.5

400

A skydiver falls 144 feet in three seconds. How far does the skydiver fall per second?

48 feet per second

400

Brooke earned \$34 for 4 hours of work.

Find the constant of proportionality and write an equation for the problem.

k = 8.5

y=8.5x

500

Solve

25 x 6/2

75

500

Solve.

7.3 x 2.3

16.79

500

Find the Constant of Proportionality (k).

x | 24 | 28 | 12 | 16

y |  6  |  7  |  3  | 4

1/4

.25

500

One bag of pretzels costs three dollars. Five bags of pretzels costs \$10. Which has the lower unit price?

Five bags of pretzels for \$10

500