Unit 5 Vocabulary Words Flashcards
comparison by division of two quantities
a proportional comparison in which one quantity can be described as a ratio of the other (ratio)
2 liters to 2,700 milliliters
multiplicative comparison of two quantities
a proportional comparison in which one quantity can be described as a multiple of the other (proportion)
!
“= #$! (increased by multiplying by 4)
part-to-part comparison
the comparison of one part to another part (e.g., boys to girls)
per
for each or for every
percent
the ratio of a number to 100; per hundred
positive rational number
the set of numbers that can be expressed as a fraction %&, where a and b are counting (natural) numbers
proportion
a mathematical sentence stating that two ratios are equal; for example, !’= ‘$#
qualitative
a broad subjective description (e.g., The speed of car A is slower than the speed of car B)
quantitative
a narrowed objective description associated with a quantity (numbers) (e.g., The ratio of blue cars to red cars is 6:3; therefore, there are twice as many blue cars as red cars)
rate
a ratio in which two quantities with different units of measure are compared (a multiplicative comparison of two different quantities where the measuring unit is different for each quantity; e.g., miles/gallon; feet/minute)
scale factor
the common multiplicative ratio between pairs of related data which may be represented as a unit rate
strip diagram
a model or drawing that looks like a strip of tape; a strip diagram is used to represent number relationships (a linear model used to illustrate number relationships)
unit rate
a comparison of two measures with one term having a value of 1; may also be called unit price or unit cost (a ratio between two different units where one of the terms is 1)
