Unit 3 Vocabulary Flashcards
A number expressed in the form of a/b (a over b) where a is a whole number and b is a positive whole number.
Fraction
Two fractions that have the same value, but have different numerators and denominators; the two fractions always simplify to the same fraction.
Equivalent Fractions
A comparison of two numbers using division. The comparison of a to b (where b cannot be zero) can be written as a to b, a/b, or a:b.
Ratio
A fraction whose numerator and denominator represent the same quantity but use different units. (Foot times 12 = inch)
Conversion Factor
A fraction that has a fraction in its numerator, denominator or both.
Complex fractions
Constant value of the ratio of proportional quantities x and y. Written as y = kx, k is the constant of proportionality when the graph passes through the origin. Constant of proportionality can never be zero.
Constant of proportionality
In a proportion, the product of a numerator and denominator represent the same quantity but use different units.
Cross products
Two numbers whose product is one.
Multiplicative inverse
A rate of change expressed as a percent.
Percent rate of change
A ratio comparing a number to 100.
Percent
An equation stating that two ratios are equivalent.
Rate
A comparison of two numbers using division. The ratio of a to b (where b is not 0) can be written as a to b, as (a/b), or as a:b
Ratio
Figures that have the same shape but the sizes are proportional.
Similar figures
Scale drawing a drawing that uses a scale to make an object smaller than or larger than the real object.
Scale drawing
The ratio between two sets of measurements.
Scale factor
A ratio in which the second term, or denominator, is one.
Unit rate
