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# MAFS.6.RP.1.1

Understand the concept of a ratio and use ratio language to describe a ratio relationship between two quantities. For example, “The ratio of wings to beaks in the bird house at the zoo was 2:1, because for every 2 wings there was 1 beak.” “For every vote candidate A received, candidate C received nearly three votes.”
Subject Area: Mathematics
Domain-Subdomain: Ratios & Proportional Relationships
Cluster: Level 2: Basic Application of Skills & Concepts
Cluster: Understand ratio concepts and use ratio reasoning to solve problems. (Major Cluster) -

Clusters should not be sorted from Major to Supporting and then taught in that order. To do so would strip the coherence of the mathematical ideas and miss the opportunity to enhance the major work of the grade with the supporting clusters.

Date Adopted or Revised: 02/14
Date of Last Rating: 02/14
Status: State Board Approved
Assessed: Yes

### TEST ITEM SPECIFICATIONS

• Item Type(s): This benchmark will be assessed using: MC , ETC item(s)
• N/A
• Assessment Limits :
Whole numbers should be used for the quantities. Ratios can be expressed as fractions, with “:” or with words. Items may involve mixed units within each system (e.g. convert hours/min to seconds). Context itself does not determine the order. Limit use of percent to MAFS.6.RP.1.3c.
• Calculator :

No

• Context :

Allowable

### SAMPLE TEST ITEMS (2)

• Test Item #: Sample Item 1
• Question: Jordan has 3 blue marbles and 8 red marbles.

What is the ratio of blue marbles to red marbles?

• Difficulty: N/A
• Type: MC: Multiple Choice

• Test Item #: Sample Item 2
• Question: Nora’s fruit stand sold 12 fewer pineapples than bananas last week. The stand sold 48 bananas last week.

Complete the sentences to determine and interpret the ratio of bananas sold to pineapples sold. For each blank, fill in the circle before the word or phrase that is correct.

Last week, the ratio of bananas sold to pineapples sold was A. 1:4

B. 3:4

C. 4:1

D. 4:3

E. 4:5

This ratio means that for every  A. 1   banana(s) sold,

B. 3

C. 4

D. 5

the number of pineapples sold was  A. 1  .

B. 3

C. 4

D. 5

• Difficulty: N/A
• Type: ETC: Editing Task Choice