vocabulary words

Question 1

Comparison by division of two quantities

Answer 1

A proportional comparison in which one quantity can be described as a ratio of the other (ratio.)

Question 2

Multiplicative comparison of two quantities

Answer 2

A proportional comparison in which one quantity can be described as a multiple of the other (proportion.)

Question 3

part-to-part comparison

Answer 3

The comparison of one part to another part (e.g., boys to girls.)

Question 4

per

Answer 4

For each or for every

Question 5

percent

Answer 5

The ratio of a number to 100; per hundred

Question 6

Positive rational number

Answer 6

The set of numbers that can be expressed as a fraction a/b, where a and b are counting (natural) numbers.

Question 7

Proportion

Answer 7

A mathematical sentence stating that two ratios are equal; for example, 2/6 = 6/18.

Question 8

Qualitative

Answer 8

A board subjective description (e.g., The speed of car A is slower that the speed of car B.)

Question 9

Quantitative

Answer 9

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.)

Question 10

rate

Answer 10

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.)

Question 11

ratio

Answer 11

A comparison of two quantities ( a multiplicative comparison of two quantities.)

Question 12

scale factor

Answer 12

The common multiplicative ratio between pairs of related data which may be represented as a unit rate.

Question 13

strip diagram

Answer 13

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.)

Question 14

unit rate

Answer 14

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.)

Question 15

part-to-whole-comparison

Answer 15

The comparison of one part to the whole (total) (e.g., girls to all the students.)

Question 16

customary

Answer 16

The measurement system used most often in the United States ( miles/yard/feet/inch; gallon/quart/pint/cup/fluid ounce; ton/pound/ounce.)

Question 17

metric

Answer 17

A measurement system used throughout the world based on multiples of 10 (kilometer/meter/centimeter/millimeter; liter/millimeter; kilogram/gram/milligram.)