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Unit 4
Proportions, Rates, and Ratios
7
Mathematics
6th Grade
11/06/2012

Additional Mathematics Flashcards

 


 

Cards

Term

constant

 

 

EX: 5 has the same value in 5 x 3 or in

2 + 5 - 4, but has a different value in 57.

Definition
a number that does not change from one situation to another
Term

convert

 

 

EX: 32 ounces = 2 pounds

60 minutes = 1 hour

3 feet = 3 inches = 1 yard

1 year = 12 months = 52 weeks = 365 days

Definition
to change from one unit to another
Term

equivalent ratio

 

 

EX:   2:4 is the same as 1:2

Definition
two ratios that represent the same comparison
Term

proportion

 

 

EX:   3/4  = 75/100

Definition
two ratios that are equal to each other
Term

proportional relationship

 

 

EX: 1/2, 2/4, 3/6, 4/8, 5/10

Definition
a series of ratios or comparisons that are all equal to each other
Term

rate

 

 

EX: $1.24/6 oranges

55 miles/hour

 

Definition
a ratio comparing quantities of two different units
Term

ratio

 

 

EX:  3 ways to write ratios

fraction, double dots, word "to"

1/2     1:2     1 to 2

Definition
a comparison between two numbers; follow the same rules as fractions (can be simplified or made into equivalent ratios)
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