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Lesson 1 6•1NYS COMMON CORE MATHEMATICS CURR ICULUM

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S.1Lesson 1: atios

Lesson 1: Ratios

Classwork !/ample (

The coed soccer team has our times as man$ bo$s on it as it has *irls. e sa$ the ratio o the

number o bo$s to the number o *irls on the team is4 : 1

. e read this as four to one .

Suppose the ratio o the number o bo$s to the number o *irls on the team is3 : 2

.

E a!"le #: Class Ratios

rite the ratio o the number o bo$s to the number o *irls in our class.

rite the ratio o the number o *irls to the number o bo$s in our class.

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S.#Lesson 1: atios

ecord a ratio or each o the e/amples the teacher provides.

(. '.

3. 1.

). ,.

E er$ise 1

"$ own ratio compares to

.

"$ ratio is .

E er$ise #

Usin* words2 describe a ratio that represents each ratio below.

a. 1

to12

.

b. 12:1

.

c. 2

to5

.



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S.%Lesson 1: atios

d. 5

to2

.

e. 10 :2

.

. 2:10

.



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S.&Lesson 1: atios

'ro(le! Set

( At the si/th-*rade school dance2 there are132

bo$s289

*irls2 and14

adults.

*. rite the ratio o the number o bo$s to the number o *irls.

h. rite the same ratio usin* another orm A : B vs. A to B 4.

i. rite the ratio o the number o bo$s to the number o adults. 5. rite the same ratio usin* another orm.

. 6n the ca eteria2100

milk cartons were put out or break ast. At the end o break ast2

27 remained.

a. hat is the ratio o the number o milk cartons taken to the total number o milk cartons7b. hat is the ratio o the number o milk cartons remainin* to the number o milk cartons

taken7

8. Choose a situation that could be described b$ the ollowin* ratios2 and write a sentence todescribe the ratio in the conte/t o the situation $ou chose.9or e/ample:

3 : 2. hen makin* pink paint2 the art teacher uses the ratio

3 : 2. 9or ever$

3 cups

o white paint she uses in the mi/ture2 she needs to use2

cups o red paint.

a. 1

to2

b. 29 to 30

c. 52:12

Lesson S)!!ar*

A ratio is an ordered pair o numbers2 which are not both ;ero.

A ratio is denoted A : B

to indicate the order o the numbers

math-g6-m1-topic-a-lesson-1-student.docx

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