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Lesson 2 6•1NYS COMMON CORE MATHEMATICS CURR ICULUM

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S.5Lesson 2: atios

Lesson 2: Ratios

Classwo !

E"e #ise 1

Come up with two e/amples o ratio relationships that are interestin* to $ou.

(.

'.

E"$lo ato % C&allen'e

A T-shirt manu acturin* compan$ surve$ed teena*e *irls on their avorite T-shirt color to *uidethe compan$ s decisions about how man$ o each color T-shirt the$ should desi*n andmanu acture. The results o the surve$ are shown here.

(a)o ite T*S&i t Colo s o+ Teena'e ,i ls S- )e%e

111 1

1 1 1 11 1 1 1 11 1 1 1 1 1

1 1 1 1 1 1 1ed 2lue %reen hite 4ink 5ran*e 6ellow

E"e #ises +o E"$lo ato % C&allen'e

( 7escribe a ratio relationship8 in the conte/t o this surve$8 or which the ratio is 3 : 5 .

3. 9or each ratio relationship *iven8 +ll in the ratio it is describin*.

/es# i$tion o+ t&e Ratio Relations&i$0Un e line o &i'&li'&t t&e wo s o $& ases t&at in i#ate t&e es# i$tion is a atio.

Ratio

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S.6Lesson 2: atios

9or ever$ 7

white T-shirts the$ manu acture8 the$ should manu acture 4

$ellow T-

shirts. The ratio o the number o white T-shirts to the number o $ellow T-shirts shouldbe :

9or ever$ 4 $ellow T-shirts the$ manu acture8 the$ should manu acture 7 white T-

shirts. The ratio o the number o $ellow T-shirts to the number o white T-shirts shouldbe :

The ratio o the number o *irls who liked a white T-shirt best to the number o *irls wholiked a colored T-shirt best was :

9or each red T-shirt the$ manu acture8 the$ should manu acture 4

blue T-shirts. The

ratio o the number o red T-shirts to the number o blue T-shirts should be :

The$ should purchase 4 bolts o $ellow abric or ever$ 3 bolts o oran*e abric.

The ratio o the number o bolts o $ellow abric to the number o bolts o oran*e abric

should be : The ratio o the number o *irls who chose blue or *reen as their avorite to the numbero *irls who chose pink or red as their avorite was :

Three out o ever$26

T-shirts the$ manu acture should be oran*e. The ratio o the

number o oran*e T-shirts to the total number o T-shirts should be :

;. 9or each ratio *iven8 +ll in a description o the ratio relationship it could describe8 usin* theconte/t o the surve$.

/es# i$tion o+ t&e Ratio Relations&i$

0Un e line o &i'&li'&t t&e wo s o $& ases t&at in i#ate %o- e"a $le is a atio.Ratio

4 to

3

3 : 4

19:7

7 to

26



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S.3Lesson 2: atios

4 o le Set

( Usin* the e wrote 1: 3 . 7id 2ill$ write the ratio correctl$? !/plain $our answer.

Lesson S- a %

atios can be written in two wa$s@ A to B or A : B .

e describe ratio relationships with words8 such as to 8 for each 8 for every .

math-g6-m1-topic-a-lesson-2-student.docx

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