6th Grade Math Textbook, Progress

529

CHAPTER 11

Practice 11-1

Practice 11-2

Write each ratio in simplest form.

1a.5 to 15 b.4 to 24 c. 8 to 56

2a.30 : 60 b.27 : 42 c. 75 : 125

Find the missing term in each proportion.

3a.
^57 

^2 n^5 
 b.
 132 

n 4 
 c. 
 310 

^1 n


4a.n : 3 0.5 : 5 b.2.6 : 1.7 n : 10.2

Write a proportion.

Then solve.

5.
ABCis similar

to 
XYZ. Find

the value of n.

Using the word EXCELLENT, write each ratio:

6a.E’s to all letters b.consonants to vowels

7a.Ls to Es b.vowels to consonants

1 8. Lucinda got 18 out of 20 spelling words correct

on her quiz. What is the ratio of correctly

spelled words to all words on the quiz?

1 9. The ratio of teachers to students at Hickory

School is 1 : 23. There are 25 teachers at the

school. How many students are at the school?

10.Four blank tapes cost $6.60. Find the cost

per tape.

11.Laverne rode her bike 9 mi in 1 h. At that rate,

how long will it take her to ride 30 mi?

12.If 2 dozen pencils cost $3.60, what will 3

pencils cost?

13.LeRoy makes 5 out of every 8 free throws at

basketball practice. At that rate, how many

free throws can he expect to make in 64 tries?

Write as a percent.

1a.43 to 100 b.7 to 100 c. 0.75

2a.0.5 b.
^14 
 c. 
 275 

Write as a decimal and as a fraction or mixed

number in simplest form.

3a.30% b.5% c. 81%

4a.37.5% b.625% c.187%

5a.150% b.1000% c.0.3%

Find the actual measurements.

6a.Scale width: 1
^14 
in. b.Scale length: 4.5 cm

7a.Scale: 
^12 
in. 10 mib.Scale: 1 cm 120 km

7.In an enlarged model, 1 cm 2 mm. A width of

5 cm is how many millimeters?

8.A road map uses a scale of 1 cm75 km.

Find the map distance between two cities if

the actual distance is 37.5 km.

1 9. A 9-ft telephone pole casts a 3-ft shadow.

At the same time of day, Franny stands

beside the pole. If she is 6 ft tall, how long

is her shadow?

10.Spanish is spoken by 65 out of 100 people

who work for a company. What percent of the

workers speak Spanish?

11.Mrs. Gill spends 27% of her monthly income

on rent and utilities. What percent of her monthly

income is available for other purposes?

12.In a survey, 78% of the people said they

approved of the idea of a new highway.

What percent of the people did notapprove?

13.In a ball-throwing contest, Jan scored 30 hits

out of 35 tries. Al scored 0.85 of his throws

and Roy’s rate was 85.5%. Who had the

best record?

12 m 13 m

5 m

A

BC

n 7.8 m

3 m

X

YZ

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