unit 5 Flashcards
- comparison by division 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
-ratio:
a comparison of two quantities (a multiplicative comparison of two quantities)
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)
-part-to-whole comparison:
the comparison of one part to the whole (total) (e.g., girls to all the students)
