Skill 7

Unit Rate

100

Define unit cost.

Cost per 1.

200

Find the unit rate of calories per serving if the food has 1800 calories in 30 servings. 

60

300

If a heart beats 240 times 4 minutes, find the unit rate. 

60

400

A bag of chips cost $3.28 for a 9 ounce bag. What is the unit cost of the bag. 

$0.36

500

If a 8 ounce box of cereal is sold for $0.52 per ounce, how much did it cost in total?

4.16

Proportions

100

x/14  =  7/8 

12.25

200

14/15  =   3/x

3.21

300

12/x    =  8/13

7.38

400

x/71    = 15/45

23.67

500

2/3  = x/1536

1024

Ratios

100

There are 10 girls and 15 boys in the class. What is the ratio of girls to boys?

2:3

200

There 6 basketballs, 6 tennis balls, and 12 footballs. What is the ratio of footballs to total items. 

1:2

300

There are 10 people with blue eyes, 4 people with brown eyes, and 7 people with green eyes. What is the ratio of blue eyes to green eyes. 

10:7

400

The ratio of boys to girls is 2:3. If there are 25 people on the team, how many of them are boys?

10

500

The ratio of boys to girls is 5 to 4. If there are 60 girls on the field trip, what is the total number of people on the field trip?

135

Conversions

100

5 km to cm

5000000

200

17 g to kg

0.017

300

587 mm to km

0.000587

400

6 miles to km

9.6

500

4.3 m to yd (round to 2 decimals)

4.78

Random

100

x+12=-23

-35

200

What is the area of a rectangle with a length of 16 and a width of 4.2.

67.2

300

2(x-6)=14

13

400

What PROPERTY is represent in 2(x+3)

Distributive

500

When is our unit test for skill 7?

Jan. 31